Entries |
Document | Title | Date |
20080199777 | Negative Electrode Material For Nonaqueous Secondary Cells, Negative Electrode For Nonaqueous Secondary Cells, and Nonaqueous Secondary Cell - A negative electrode material for a nonaqueous secondary battery capable of realizing a nonaqueous secondary battery having a small charging/discharging irreversible capacity at an initial cycle and exhibiting an excellent high-rate charging/discharging characteristics and an excellent cycle performances is provided. The main component of the material is graphite particles. The median diameter is 5 μm or more, and 40 μm or less in the volume-basis particle size distribution based on the laser diffraction/scattering particle size distribution measurement. The tapping density is 0.7 g/cm | 08-21-2008 |
20080199778 | Electrode for secondary batteries and method for making same, and secondary batteries using the electrode - An electrode for secondary batteries comprising a positive electrode, a negative electrode and a support electrolyte is used as at least one of the electrodes. The electrode comprises a radical compound and a single ion-conducting material. The single ion-conducting material has a functional group of —COOX or -S0 | 08-21-2008 |
20080241695 | CARBON NANOTUBE COMPOSITE ELECTRODE MATERIAL, METHOD FOR MANUFACTURING THE SAME AND ELECTRODE ADOPTING THE SAME - The present invention relates to a carbon nanotube composite electrode material, a method for manufacturing the same and an electrode including the carbon nanotube composite material. The carbon nanotube electrode material includes carbon fibers and carbon nanotubes. The carbon fibers constitute a network structure. The carbon nanotubes are wrapped around and adhering to the carbon fibers. Because a diameter of the carbon fibers is about 100 times larger than that of the carbon nanotubes, gaps between the carbon fibers are also larger than that between the carbon nanotubes such that electrolytes can easily penetrate into the carbon fibers and come into contact with all or nearly all of the available surface area of the carbon nanotubes. In other words, an effective surface area of the carbon nanotubes is improved, and capacity of electrode material is also improved. | 10-02-2008 |
20080241696 | ELECTRODE AND ELECTROCHEMICAL DEVICE - An electrode is provided as one capable of adequately maintaining voids in a surface layer and an electrochemical device is provided as one using the electrode. The electrode has a current collector, and an active material-containing layer provided on the current collector and containing active material particles, the number of peaks in a particle size distribution of the active material particles in a lower part on the current collector side in the active material-containing layer is larger than the number of peaks in a particle size distribution of the active material particles in a surface part on the opposite side to the current collector in the active material-containing layer, and a thickness of the lower part is not less than 50% nor more than 90% of a total thickness of the surface part and the lower part. | 10-02-2008 |
20080261116 | METHOD OF DEPOSITING SILICON ON CARBON MATERIALS AND FORMING AN ANODE FOR USE IN LITHIUM ION BATTERIES - A method of modifying the surface of carbon materials such as vapor grown carbon nanofibers is provided in which silicon is deposited on vapor grown carbon nanofibers using a chemical vapor deposition process. The resulting silicon-carbon alloy may be used as an anode in a rechargeable lithium ion battery. | 10-23-2008 |
20080274407 | Layered carbon electrodes for capacitive deionization and methods of making the same - Layered carbon electrodes for use in, for example, Capacitive Deionization (CDI) of a fluid stream or, for example, an electric double layer capacitor (EDCL). Methods of making the layered carbon electrodes are also described. The layered carbon electrode comprises an electrically conductive porous layer and an adjacent layer comprising carbon particles in contact with the electrically conductive porous layer. A thermoplastic material is infused in the electrically conductive porous layer and provides a bond to the carbon particles at the interface of the electrically conductive porous layer and the adjacent layer comprising carbon particles. | 11-06-2008 |
20080280207 | Material Based on Carbon and Silicon Nanotubes that Can be Used in Negative Electrodes for Lithium Batteries - The invention relates to a material comprising carbon nanotubes, deposited at the surface of each of which is a substantially continuous film of nanoscale silicon particles, that can be used in negative electrodes for a lithium battery. | 11-13-2008 |
20080286654 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery is composed of a positive electrode, a negative electrode, and a non-aqueous electrolyte, and the negative electrode has a negative electrode composite layer containing a negative electrode active material and a binder formed on a negative electrode current collector. The negative electrode active material contains a complex alloy powder containing tin, cobalt and carbon and graphite powder, and the negative electrode composite layer formed on the negative electrode current collector has percentage of porosity within the range of 5 to 20 volume %. | 11-20-2008 |
20080299460 | Anode of lithium battery and method for fabricating the same - An anode of a lithium battery includes a supporting member and a carbon nanotube film disposed on a surface of the support member. The carbon nanotube film includes at least two overlapped and intercrossed layers of carbon nanotubes. Each layer includes a plurality of successive carbon nanotube bundles aligned in the same direction. A method for fabricating the anode of the lithium battery includes the steps of: (a) providing an array of carbon nanotubes; (b) pulling out, by using a tool, at least two carbon nanotube films from the array of carbon nanotubes; and (c) providing a supporting member and disposing the carbon nanotube films to the supporting member along different directions and overlapping with each other to achieving the anode of lithium battery. | 12-04-2008 |
20080311476 | ELECTRODE AND ELECTROCHEMICAL DEVICE - An electrode has a current collector, and an active material-containing layer provided on the current collector and containing active material particles and ceramic particles, and a weight concentration of the ceramic particles to the active material particles in a surface part in the active material-containing layer on the opposite side to the current collector is higher than a weight concentration of the ceramic particles to the active material particles in a lower part in the active material-containing layer on the current collector side. Furthermore, the thickness of the surface part is not less than 30% nor more than 60% of the total thickness of the surface part and the lower part. | 12-18-2008 |
20090004569 | Negative Electrode Material For Lithium-Ion Secondary Batteries and Process of Producing the Same - A lithium-ion secondary battery which has a high reversible capacity and a high initial efficiency while effectively utilizing the excellent rate profile of carbon black, and a process of producing the same are disclosed. The negative electrode material includes composite particles including graphite powder particles, carbon black, and a pitch carbide, the composite particles having an average particle diameter D | 01-01-2009 |
20090023072 | Carbon-Material for Lithium Battery and Lithium Battery - To provide a carbon material from which lithium battery whose discharge capacity is large and which is good in terms of output characteristic is obtainable. | 01-22-2009 |
20090029256 | SI/C COMPOSITE, ANODE ACTIVE MATERIALS, AND LITHIUM BATTERY INCLUDING THE SAME - An Si/C composite includes carbon (C) dispersed in porous silicon (Si) particles. The Si/C composite may be used to form an anode active material to provide a lithium battery having a high capacity and excellent capacity retention. | 01-29-2009 |
20090047579 | Carbon anode compositions for lithium ion batteries - A lithium secondary battery comprising a positive electrode, a negative electrode comprising a carbonaceous material which is capable of absorbing and desorbing lithium ions, and a non-aqueous electrolyte disposed between the negative electrode and the positive electrode. The carbonaceous material comprises a graphite crystal structure having an interplanar spacing d | 02-19-2009 |
20090053606 | SURFACE TREATED ANODE AND LITHIUM BATTERY USING THE SAME - A surface treated anode and a lithium battery using the same are provided. The surface treated anode includes a current collector, and an anode active material layer formed on the current collector. The anode active material layer is treated with an amine group containing compound. | 02-26-2009 |
20090104535 | ANODE FOR A LITHIUM RECHARGEABLE BATTERY AND LITHIUM RECHARGEABLE BATTERY USING THE SAME - An anode for a lithium rechargeable battery includes an active material layer that includes a metal-carbon composite active material including a carbonaceous active material and at least one active material selected from the group consisting of a metal or a metal oxide, graphite particles having surfaces that are coated or partially coated with a resin f, and a binder that binds and fixes the active material particles and the graphite particles to each other. The anode further includes a collector on which the active material layer is disposed. The resin-coated graphite particles maintain multiple conductive contact surfaces between the active material particles due to adhesiveness of the resin even when the volume of the metal-carbon composite active material particles is changed during charging and discharging, and prevent a reduction of the battery capacity and improve the lifetime of the battery. | 04-23-2009 |
20090117466 | Hybrid anode compositions for lithium ion batteries - The present invention provides an exfoliated graphite-based hybrid material composition for use as an electrode, particularly as an anode of a lithium ion battery. The composition comprises: (a) micron- or nanometer-scaled particles or coating which are capable of absorbing and desorbing alkali or alkaline metal ions (particularly, lithium ions); and (b) exfoliated graphite flakes that are substantially interconnected to form a porous, conductive graphite network comprising pores, wherein at least one of the particles or coating resides in a pore of the network or attached to a flake of the network and the exfoliated graphite amount is in the range of 5% to 90% by weight and the amount of particles or coating is in the range of 95% to 10% by weight. Also provided is a lithium secondary battery comprising such a negative electrode (anode). The battery exhibits an exceptional specific capacity, excellent reversible capacity, and long cycle life. | 05-07-2009 |
20090117467 | Nano graphene platelet-based composite anode compositions for lithium ion batteries - The present invention provides a nano-scaled graphene platelet-based composite material composition for use as an electrode, particularly as an anode of a lithium ion battery. The composition comprises: (a) micron- or nanometer-scaled particles or coating which are capable of absorbing and desorbing lithium ions; and (b) a plurality of nano-scaled graphene platelets (NGPs), wherein a platelet comprises a graphene sheet or a stack of graphene sheets having a platelet thickness less than 100 nm; wherein at least one of the particles or coating is physically attached or chemically bonded to at least one of the graphene platelets and the amount of platelets is in the range of 2% to 90% by weight and the amount of particles or coating in the range of 98% to 10% by weight. Also provided is a lithium secondary battery comprising such a negative electrode (anode). The battery exhibits an exceptional specific capacity, an excellent reversible capacity, and a long cycle life. | 05-07-2009 |
20090117468 | ANODE ACTIVE MATERIAL AND METHOD OF MANUFACTURING THE SAME AND LITHIUM SECONDARY BATTERY USING THE SAME - An anode active material that can prominently improve lifetime characteristics of a lithium secondary battery includes carbon nanotubes and silicon particles located in an internal space of the carbon nanotubes. The anode active material is manufactured by removing end caps of the carbon nanotubes to provide carbon nanotubes having lengths in the range of 0.1 to 10 μm, and filling an interior space of the carbon nanotubes with silicon particles. In addition, a lithium secondary battery comprises an anode including an anode collector and the anode active material, a cathode including a cathode collector and cathode active material, and a separator interposed between the anode and the cathode. The anode active material includes carbon nanotubes and silicon particles located in internal spaces of the carbon nanotube. | 05-07-2009 |
20090117469 | POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY INCLUDING THE SAME - A positive electrode active material for a non-aqueous electrolyte secondary battery including a lithium-containing transition metal oxide having a closest-packed cubic structure of oxygen, the lithium-containing transition metal oxide having a composition represented by the formula (1): | 05-07-2009 |
20090123843 | SUPERCAPACITOR AND BATTERY ELECTRODE CONTAINING THERMALLY EXFOLIATED GRAPHITE OXIDE - A supercapacitor or battery electrode containing a modified graphite oxide material, which is a thermally exfoliated graphite oxide with a surface area of from about 300 m | 05-14-2009 |
20090130561 | NON-AQUEOUS SECONDARY BATTERY-USE GRAPHITE COMPOSITE PARTICLE, CATHODE ACTIVE SUBSTANCE MATERIAL CONTAINING IT, CATHODE AND NON-AQUEOUS SECONDARY BATTERY - To provide a nonaqueous secondary battery ensuring that a charge-discharge irreversible capacity at an initial cycle is sufficiently small even when an active material layer comprising a negative electrode active material on a current collector is increased in a density for obtaining a high capacity. | 05-21-2009 |
20090130562 | Carbon-Coated Silicon Particle Powder as the Anode Material for Lithium Ion Batteries and Method of Making the Same - A process for the production of coated silicon/carbon particles comprising:
| 05-21-2009 |
20090136849 | Composite carbon material of negative electrode in lithuim ion battery and its preparation method - A composite carbon material of negative electrode in lithium ion, which is made of composite graphite, includes a spherical graphite and a cover layer, wherein the cover layer is pyrolytic carbon of organic substance. Inserted transition metal elements are contained between layers of graphite crystal. Preparation of the negative electrode includes the steps of: crushing graphite, shaping to form a spherical shape, purifying treatment, washing, dewatering and drying, dipped in salt solution doped by transition metal in multivalence, mixed with organic matter, covering treatment, and carbonizing treatment or graphitization treatment. The negative electrode provides advantages of reversible specific capacity larger than 350 mAh/g, coulomb efficiency higher than 94% at first cycle, conservation rate for capacity larger than 8-% in 500 times of circulation. | 05-28-2009 |
20090142668 | CATHODE ACTIVE MATERIAL, CATHODE, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - The present application provides a nonaqueous electrolyte secondary battery which includes a cathode having a cathode active material layer, an anode, and a nonaqueous electrolyte, wherein the cathode active material layer includes secondary particles of a lithium phosphate compound having olivine structure, an average particle diameter A of primary particles constituting the secondary particles is 50 nm or more and 500 nm or less, and a ratio B/A of a pore diameter B of the secondary particles to the average particle diameter A of the primary particles is 0.10 or more and 0.90 or less. | 06-04-2009 |
20090155693 | DISPERSED SOLUTION OF CARBON-CONTAINING MATERIALS FOR THE PRODUCTION OF CURRENT COLLECTORS - A method of preparing a dispersed solution of carbon-containing particles of nanometric size includes: preparing a polymeric matrix of a determined viscosity, then introducing into the matrix a fraction of carbon-containing particles and a fraction of wetting agent, the solvent of the matrix, and maintaining under agitation until a sol of stable viscosity is obtained, these operations being repeated until the carbon-containing particles and the solvent are exhausted. The dispersal solution includes: in a ratio to the total volume of solution: i) 1% to 4%, preferably 2% to 4% (m/v), of carbon-containing particles in suspension, ii) 20% to 40% (v/v) of a polymeric matrix, and iii) a wetting agent, the solvent of the polymeric matrix, said dispersed solution comprising neither binder nor dispersing agent. | 06-18-2009 |
20090162753 | SPHERICAL CARBONS AND METHOD FOR PREPARING THE SAME - The present invention provides a method for preparing spherical carbon comprising step of heat-treating a mixture of a carbon precursor and dispersion media, a spherical non-graphitizable carbon using the same, and a method for preparing spherical artificial graphite. | 06-25-2009 |
20090191462 | ANODE ACTIVE MATERIAL, ANODE, BATTERY, AND METHOD OF MANUFACTURING ANODE - A battery that has a higher capacity and superior charge and discharge efficiency is provided. The battery includes a cathode, an anode, and an electrolyte. The anode has an anode active material layer provided on an anode current collector, and the anode active material layer contains a spherocrystal graphitized substance of mesophase spherule provided with a fine pore as an anode active material. | 07-30-2009 |
20090202911 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY NEGATIVE ELECTRODE MATERIAL, MAKING METHOD, LITHIUM ION SECONDARY BATTERY, AND ELECTROCHEMICAL CAPACITOR - A negative electrode material comprises a conductive powder of particles of a lithium ion-occluding and releasing material coated on their surface with a graphite coating. The graphite coating, on Raman spectroscopy analysis, develops broad peaks having an intensity I | 08-13-2009 |
20090214954 | NEGATIVE ELECTRODE MATERIAL FOR NONAQUEOUS SECONDARY CELLS, NEGATIVE ELECTRODE FOR NONAQUEOUS SECONDARY CELLS, AND NONAQUEOUS SECONDARY CELL - A negative electrode material for a nonaqueous secondary battery capable of realizing a nonaqueous secondary battery having a small charging/discharging irreversible capacity at an initial cycle, exhibiting an excellent high-rate charging/discharging characteristics and an excellent cycle performances, and having no electrodeposition problem is provided. The main component of the material is graphite particles. The median diameter of the graphite particles is 5 μm or more, and 40 μm or less in the volume-basis particle size distribution based on the laser diffraction/scattering particle size distribution measurement. The tapping density of the negative electrode material is 0.7 g/cm | 08-27-2009 |
20090220863 | LITHIUM ION SECONDARY BATTERY - A lithium ion secondary battery is capable of improving the energy density and power density and excellent in high rate cycle characteristics applicable to hybrid cars, etc. The lithium ion secondary battery including a positive electrode of a lithium transition metal complex oxide, a negative electrode for absorbing/releasing lithium, and a non-aqueous electrolyte containing a lithium salt, in which the negative electrode has a negative electrode active material using a non-graphitizing carbon (spacing d(002) of 0.360 nm or more by XRD) and a graphitizing carbon (spacing d(002) of 0.339 nm or more and less than 0.360 nm by XRD) surface-modified at a thickness in a range from 10 nm to 100 nm in admixture, comprising the non-graphitizing carbon and the graphitizing carbon at a ratio in the range of 90 to 50 wt %:10 to 50 wt % and, further, graphitizing carbon having a grain size larger than that of the non-graphitizing carbon is used. | 09-03-2009 |
20090258298 | Graphite Particle, Carbon-Graphite Composite Particle and Their Production Processes - The present invention relates to a graphite particle and a carbon-graphite composite particle both suitable for use in electrode for lithium ion secondary battery, as well as to processes for producing these particles. | 10-15-2009 |
20090269669 | Negative electrode active material for a lithium rechargeable battery and lithium rechargeable battery comprising the same - Disclosed are a negative electrode active material and a lithium rechargeable battery. The negative electrode active material may include a graphite core being configured to absorb and release lithium. The graphite core may include pores extending from an outer surface of the graphite core to the inside of the graphite core. The pores may include metal nano-particles and amorphous carbon. The lithium rechargeable battery may include a positive electrode plate including a positive electrode active material configured to absorb and release lithium ions, a negative electrode plate including the negative electrode active material configured to absorb and release lithium ions, a separator interposed between the positive electrode and negative electrode plates and electrolyte configured to transport the lithium ions. | 10-29-2009 |
20090274960 | ANODE ACTIVE MATERIAL, ANODE, AND LITHIUM SECONDARY BATTERY - The principal object of the present invention is to provide an anode active material suitable for rapid charging. The present invention provides an anode active material comprising a metallic part which comprises Sn or Si and has a film thickness of 0.05 μm or less, and thereby solving the problem. | 11-05-2009 |
20090280413 | CARBON MATERIAL FOR LITHIUM-ION SECONDARY BATTERY NEGATIVE ELECTRODE, LOW-CRYSTALLINE CARBON IMPREGNATED CARBON MATERIAL FOR LITHIUM-ION SECONDARY BATTERY NEGATIVE ELECTRODE, NEGATIVE ELECTRODE PLATE, AND LITHIUM-ION SECONDARY BATTERY - There is obtained a carbon material for lithium-ion secondary battery negative electrode, a low-crystalline carbon impregnated carbon material for lithium-ion secondary battery negative electrode, a negative electrode plate, and a lithium-ion secondary battery, each of which realizes a first charge/discharge cycle with less gas generation and provides a rapid charge/discharge. The carbon material is obtained by: blending and kneading a carbonaceous aggregate with a binder to form a composition; press molding the composition into an article; carbonizing the press molded article; graphitizing the article to obtain an artificial graphite block; milling the block; and carrying out particle size control. The carbon material has characteristics of: (1) R-value=(I | 11-12-2009 |
20090297951 | ANODE FOR LITHIUM ION SECONDARY BATTERY, PRODUCTION METHOD THEREOF, AND LITHIUM ION SECONDARY BATTERY USING THE SAME - Disclosed is anode for use in a lithium ion secondary battery. The anode includes an anode current collector and an anode active material arranged thereon, in which the anode active material contains amorphous carbon and at least one metal dispersed in the amorphous carbon, and the at least one metal is selected from: 30 to 70 atomic percent of Si; and 1 to 40 atomic percent of Sn. The anode gives a lithium ion secondary battery that has a high charge/discharge capacity and is resistant to deterioration of its anode active material even after repetitive charge/discharge cycles. | 12-03-2009 |
20090297952 | POSITIVE ELECTRODE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY INCLUDING THE SAME, AND METHOD FOR PRODUCING THE SAME - Disclosed is a positive electrode material for nonaqueous electrolyte secondary batteries, which comprises a porous body composed of a material containing a polyanion. Also disclosed is a method for producing such a positive electrode material for nonaqueous electrolyte secondary batteries. When a carbon coating is formed on the surface of a material containing a polyanion of lithium iron phosphate or the like by a conventional method, the capacity during low rate discharge is improved but the capacity is not sufficient. In the present invention, the positive electrode material for nonaqueous electrolyte secondary batteries, which comprises a porous body composed of a material containing a polyanion, has a structure wherein the inner walls of the pores of the porous body are provided with a layered carbon, for improving the discharge capacity. | 12-03-2009 |
20090305138 | Composite Carbon Electrodes Useful In Electric Double Layer Capacitors And Capacitive Deionization Methods of Making The Same - Composite carbon electrodes for use in, for example, Capacitive Deionization (CDI) of a fluid stream or, for example, an electric double layer capacitor (EDLC) are described. Methods of making the composite carbon electrodes are also described. The composite carbon electrode comprises an electrically conductive porous matrix comprising carbon; and an electric double layer capacitor, comprising an activated carbonized material, dispersed throughout the pore volume of the electrically conductive porous matrix. | 12-10-2009 |
20090305139 | Electrode material containing mixture of polyvinyl alcohol of high degree of polymerization and polyvinyl pyrrolidone as binder and lithium secondary - An electrode mix comprising a mixture of a polyvinyl alcohol with polyvinyl pyrrolidone as a binder and a lithium secondary battery comprising the same are disclosed. The electrode mix and lithium secondary battery according to the present invention enable stable maintenance of adhesion between active materials and/or adhesion between the active material and current collector and reduction of volumetric changes of anode active materials during repeated charge/discharge cycles, through the use of a polymer having an improved elongation percentage while exhibiting very high adhesive strength, as a binder of an electrode mix. Therefore, the present invention enables production of a large-capacity lithium secondary battery particularly using a silicon- or tin-based anode active material. | 12-10-2009 |
20090311604 | Sulfur-Carbon Material - An electrode material having carbon and sulfur is provided. The carbon is in the form of a porous matrix having nanoporosity and the sulfur is sorbed into the nanoporosity of the carbon matrix. The carbon matrix can have a volume of nanoporosity between 10 and 99%. In addition, the sulfur can occupy between 5 to 99% of the nanoporosity. A portion of the carbon structure that is only partially filled with the sulfur remains vacant allowing electrolyte egress. In some instances, the nanoporosity has nanopores and nanochannels with an average diameter between 1 nanometer and 999 nanometers. The sulfur is sorbed into the nanoporosity using liquid transport or other mechanisms providing a material having intimate contact between the electronically conductive carbon structure and the electroactive sulfur. | 12-17-2009 |
20090317720 | Lithium-Alloying-Material/Carbon Composite - An electrode material having carbon and lithium-alloying-material is provided. The carbon is in the form of a porous matrix having nanoporosity and the lithium-alloying-material is sorbed into the nanoporosity of the carbon matrix. The carbon matrix can have a volume of nanoporosity between 10 and 99%. In addition, the lithium-alloying-material can occupy between 5 to 99% of the nanoporosity. A portion of the carbon structure that is only partially filled with the lithium-alloying-material remains vacant providing room for volume expansion on alloying with lithium and allowing electrolyte egress. In some instances, the nanoporosity has nanopores and nanochannels with an average diameter between 1 nanometer and 999 nanometers. The lithium-alloying-material is sorbed into the nanoporosity using liquid transport or other mechanisms providing a material having intimate contact between the electronically conductive carbon structure and the electroactive lithium-alloying-material. | 12-24-2009 |
20100009260 | Anode Material for Lithium Secondary Batteries and Lithium Secondary Batteries - The present invention is to provide a lithium ion secondary battery that realizes to raise an initial charge and discharge efficiency without deteriorating its charge and discharge characteristic in comparison with the conventional technology. | 01-14-2010 |
20100009261 | NEGATIVE ELECTRODE MATERIAL, MAKING METHOD, LITHIUM ION SECONDARY BATTERY, AND ELECTROCHEMICAL CAPACITOR - Particles of a silicon oxide of formula: SiOx wherein x is 0.5 to 1.6, a silicon composite comprising silicon dispersed in silicon dioxide and having a molar ratio Si/O from 1:0.5 to 1:1.6, or a mixture thereof are doped with 50-100,000 ppm of phosphorus. A negative electrode material comprising the phosphorus-doped particles is suited for use in non-aqueous electrolyte secondary batteries. A lithium ion secondary battery having satisfactory cycle and rate properties is obtainable. | 01-14-2010 |
20100021819 | Graphene nanocomposites for electrochemical cell electrodes - A composite composition for electrochemical cell electrode applications, the composition comprising multiple solid particles, wherein (a) a solid particle is composed of graphene platelets dispersed in or bonded by a first matrix or binder material, wherein the graphene platelets are not obtained from graphitization of the first binder or matrix material; (b) the graphene platelets have a length or width in the range of 10 nm to 10 μm; (c) the multiple solid particles are bonded by a second binder material; and (d) the first or second binder material is selected from a polymer, polymeric carbon, amorphous carbon, metal, glass, ceramic, oxide, organic material, or a combination thereof. For a lithium ion battery anode application, the first binder or matrix material is preferably amorphous carbon or polymeric carbon. Such a composite composition provides a high anode capacity and good cycling response. For a supercapacitor electrode application, the solid particles preferably have meso-scale pores therein to accommodate electrolyte. | 01-28-2010 |
20100021820 | Negative electrode material for lithium ion secondary battery and method for producing the same - A negative electrode material for lithium ion secondary batteries includes core-shell composite particles prepared by covering the surface of a graphite powder with an amorphous carbon powder via a carbide of binder pitch, the graphite powder having an average particle diameter of 5 to 30 μm and an average lattice spacing d(002) of less than 0.3360 nm, and the amorphous carbon powder having an average particle diameter of 0.05 to 2 μm and an average lattice spacing d(002) of 0.3360 nm or more. A method to produce the negative electrode material includes mixing a graphite powder with pitch having a softening point of 70 to 250° C., adding an amorphous carbon powder to the resulting product, kneading the mixture while applying a mechanical impact to soften the pitch, so that the amorphous carbon powder is dispersed and stabilized in the pitch that has softened, and carbonizing the pitch by heat treatment of the mixture at 750 to 2250° C. in a non-oxidizing atmosphere. The negative electrode material exhibits an excellent rate performance, a high reversible capacity, and a high first cycle charge-discharge efficiency. | 01-28-2010 |
20100062338 | NANOSTRUCTURED ANODE FOR HIGH CAPACITY RECHARGEABLE BATTERIES - Nanostructured anodes for high capacity rechargeable batteries are provided according to various aspects of the disclosure. The nanostructure anodes may comprise silicon nanoparticles for the active material of the anodes to increase the storage capacity of the batteries. The silicon nanoparticles are able to move relative to one another to accommodate volume expansion during lithium intercalation, and therefore mitigate active material degradation due to volume expansion. The anodes may also comprise elastomeric binders that bind the silicon nanoparticles together and prevent capacity loss due to separation and electrical isolation of the silicon nanoparticles. | 03-11-2010 |
20100068626 | NEGATIVE ELECTRODE MATERIAL FOR LITHIUM RECHARGEABLE BATTERY - A negative electrode material for lithium secondary batteries includes carbon microspheres having an arithmetic mean particle diameter do measured using an electron microscope of 150 to 1000 nm, a volatile content Vm of 5.0% or less, a ratio ΔDst/Dst (where, Dst indicates the Stokes mode diameter Dst measured using a disk centrifuge (DCF), and ΔDst indicates the half-width of the Stokes mode diameter Dst) of 0.40 to 1.10, and a lattice spacing (d002) measured by X-ray diffractometry of 0.370 nm or less. The negative electrode material is used for a high-output lithium secondary battery that has a high lithium ion doping-undoping speed and excellent cycle characteristics, and is suitable as a power supply for portable instruments, hybrid cars, electric vehicles, and the like. | 03-18-2010 |
20100075227 | NONAQUEOUS ELECTROLYTE BATTERY AND NEGATIVE ELECTRODE ACTIVE MATERIAL - A negative electrode active material includes complex particles and a carbonaceous material phase which binds the complex particles. The complex particles comprises a metal oxide having an average size of 50 nm to 1 μm and SiO | 03-25-2010 |
20100075228 | Non-thermofusible phenol resin powder, method for producing the same, thermosetting resin composition, sealing material for semiconductor, and adhesive for semiconductor - Disclosed is a non-thermofusible phenol resin powder having an average particle diameter of not more than 20 μm and a single particle ratio of not less than 0.7. This non-thermofusible phenol resin powder preferably has a chlorine content of not more than 500 ppm. This non-thermofusible phenol resin powder is useful as an organic filler for sealing materials for semiconductors and adhesives for semiconductors. The non-thermofusible phenol resin powder is also useful as a precursor of functional carbon materials such as a molecular sieve carbon and a carbon electrode material. | 03-25-2010 |
20100075229 | POSITIVE ELECTRODE FORMING MATERIAL, COMPONENT THEREOF, METHOD FOR PRODUCING THE SAME AND RECHARGEABLE LITHIUM-ION BATTERY - Disclosed is a positive electrode forming material for a positive electrode of a battery, the material including particles of a positive electrode active material and fine carbon fibers adhering to surfaces of particles of the positive electrode active material in a shape of a network. The positive electrode active material is preferably fine particles having an average particle diameter of 0.03 to 40 μm. Each of the fine carbon fibers is preferably carbon nanofiber having an average fiber diameter of 1 to 100 nm and an aspect ratio of 5 or greater. The carbon nanofiber is surface-oxidized. The positive electrode forming material includes a binder. The content of the fine carbon fibers is 0.5 to 15 parts by mass and the content of the binder is 0.5 to 10 parts by mass with respect to 100 parts by mass of the positive electrode active material. | 03-25-2010 |
20100086856 | COMPOSITE GRAPHITE PARTICLES FOR NONAQUEOUS SECONDARY BATTERY, NEGATIVE-ELECTRODE MATERIAL CONTAINING THE SAME, NEGATIVE ELECTRODE, AND NONAQUEOUS SECONDARY BATTERY - A subject is to provide a nonaqueous secondary battery which is sufficiently low in charge/discharge irreversible capacity in initial cycling even when an active-material layer comprising a negative-electrode material and formed on a current collector is densified for capacity increase where the subject is accomplished with composite graphite particles for a nonaqueous secondary battery which comprise a composite of spherical graphite particles and a binder graphite and which satisfy at least one of (a) to (g) conditions as presently claimed and a negative electrode produced using the carbonaceous negative-electrode material according to the invention is excellent in electrolytic-solution infiltration and provides a nonaqueous secondary battery having excellent charge/discharge high-load characteristics. | 04-08-2010 |
20100092867 | Porous Polymer Electrodes - Porous polymer electrode assemblies are useful in the detection or quantification of a variety of analytes. By preparing a porous monolith, and applying a conductive polymer to the monolith, a porous matrix is prepared that combines favorable conductive properties, by virtue of the presence of the conductive polymer, with the porous character of the underlying monolith. The resulting porous electrode can be used for qualitative or quantitative analysis, and the capture and/or release of selected charged materials, such as nucleic acids. The pores of the electrode matrix may also be filled with nonconductive material, yielding electrodes having a plurality of discrete conductive surfaces. | 04-15-2010 |
20100092868 | CARBON NANOTUBE-COATED SILICON/METAL COMPOSITE PARTICLE, PREPARATION METHOD THEREOF, AND ANODE FOR SECONDARY BATTERY AND SECONDARY BATTERY USING THE SAME - Disclosed are a carbon nanotube-coated silicon/metal composite particle, a preparation method thereof, an anode for a secondary battery comprising the carbon nanotube-coated silicon/metal composite particle, and a secondary battery comprising the anode, wherein the carbon nanotube-coated silicon/metal composite particle characterized in comprising: a composite particle of silicon and metal; and a carbon nanotube coated on the surface of the composite particle of silicon and metal, wherein the carbon nanotube-coated silicon/metal composite particle may be prepared by preparing composite particle of silicon and metal, followed by treating the composite particles of silicon and metal with heat under a mixed gas atmosphere of an inert gas and a hydrocarbon gas. | 04-15-2010 |
20100119945 | POSITIVE ELECTRODE ACTIVE MATERIAL SINTERED BODY FOR BATTERY - The positive electrode active material sintered body for a battery of the present invention is a positive electrode active material sintered body for a battery satisfying the following requirements (I) to (VII): (I) fine particles in a positive electrode active material are sintered to constitute the sintered body; (II) a peak pore diameter which provides a maximum differential pore volume value in a pore diameter range of 0.01 to 10 μm in a pore distribution is 0.3 to 5 μm; (III) a total pore volume is 0.1 to 1 cc/g; (IV) an average particle diameter is not less than the peak pore diameter and not more than 20 μm; (V) any peak, which provides a differential pore volume value of not less than 10% of the maximum differential pore volume value, is not present on a smaller pore diameter side than the peak pore diameter in the pore distribution; (VI) a BET specific surface area is 1 to 6 m | 05-13-2010 |
20100136431 | ANODE ACTIVE MATERIAL, ANODE INCLUDING THE ANODE ACTIVE MATERIAL, METHOD OF MANUFACTURING THE ANODE, AND LITHIUM BATTERY INCLUDING THE ANODE - An anode active material for lithium batteries, an anode including the anode active material, a method of manufacturing the anode, and a lithium battery including the anode. The anode active material includes secondary particles formed of agglomerated primary nanoparticles. The primary nanoparticles include a non-carbonaceous material bound with hollow carbon nanofibers. The anode includes the anode active material and a polymeric binder having an electron donor group. | 06-03-2010 |
20100136432 | NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE HAVING THE SAME AND LITHIUM SECONDARY BATTERY - A lithium secondary battery including a positive electrode having a positive electrode active material, a negative electrode having a negative electrode active material, a separator separating the positive electrode from the negative electrode and an electrolyte. The negative electrode active material includes a graphite core particle, a carbon layer coating the graphite core particle, and metal particles dispersed in the carbon layer. | 06-03-2010 |
20100151328 | Activated Carbon Materials For High Energy Density Ultracapacitors - An activated carbon material derived, for example, by carbonizing and activating a non-lignocellulosic carbon precursor has a structural order ratio less than or equal to 0.08, and a nitrogen content greater than 0.2 wt. %. The activated carbon material can also have a volumetric capacitance greater than or equal to 70 F/cm | 06-17-2010 |
20100159331 | NEGATIVE ACTIVE MATERIAL, NEGATIVE ELECTRODE INCLUDING THE SAME, METHOD OF MANUFACTURING THE NEGATIVE ELECTRODE, AND LITHIUM BATTERY INCLUDING THE NEGATIVE ELECTRODE - A negative active material, a negative electrode including the negative active material, a method of manufacturing the negative electrode, and a lithium battery including the negative electrode. The negative active material includes a composite including a non-carbonaceous material, carbon nanotubes (CNTs), and carbon nanoparticles. The carbon nanoparticles are formed by carbonizing a polymer of carbonizable monomers. | 06-24-2010 |
20100159332 | PLATE-LIKE PARTICLE FOR CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, CATHODE ACTIVE MATERIAL FILM FOR LITHIUM SECONDERY BATTERY, METHODS FOR MANUFACTURING THE PARTICLE AND FILM, METHOD FOR MANUFACTURING CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY - An object of the present invention is to provide a lithium secondary battery which has improved capacity, durability, and rate characteristic as compared with conventional lithium secondary batteries. A plate-like particle or a film for a lithium secondary battery cathode active material has a layered rock salt structure. The (003) plane is oriented in a direction intersecting the direction of the plate surface of the particle or film. | 06-24-2010 |
20100159333 | PLATE-LIKE PARTICLE FOR CATHODE ACTIVE MATERIAL OF A LITHIUM SECONDARY BATTERY, AND A LITHIUM SECONDARY BATTERY - By exposing the crystal plane (a plane other than the (003) plane: e.g., the (101) plane and (104) plane) through which lithium ions are favorably intercalated and deintercalated, more to an electrolyte, characteristics such as cell capacity is improved. The present invention relates a plate-like particle for a lithium secondary battery cathode active material. The particle has a layered rock salt structure. The (003) plane is oriented in a direction intersecting a particle plate surface. The porosity is 10% or less. The ratio of an observed surface area (β) determined from a measured value of a BET specific surface area to a virtual surface area (α) of the particle which is defined by the planar shape and thickness of the particle on the assumption that the plate surface is smooth, β/α is 3 or more and 10 or less | 06-24-2010 |
20100173203 | CATHODE COMPOSITION FOR LITHIUM ION BATTERY AND METHOD FOR FABRICATING THE SAME - A cathode composition of lithium ion battery includes a number of nanoparticles and coating material coating outer surfaces of the nanoparticles. | 07-08-2010 |
20100173204 | PLATE-LIKE PARTICLE FOR CATHODE ACTIVE MATERIAL OF A LITHIUM SECONDARY BATTERY, A CATHODE ACTIVE MATERIAL FILM OF A LITHIUM SECONDARY BATTERY, METHOD FOR MANUFACTURING THE SAME, METHOD FOR MANUFACTURING A CATHODE ACTIVE MATERIAL OF A LITHIUM SECONDARY BATTERY, AND A LITHIUM SECONDARY BATTERY - An object of the present invention is to provide a lithium secondary battery which has improved capacity, durability, and rate characteristic as compared with conventional lithium secondary batteries. A plate-like particle or a film for a lithium secondary battery cathode active material contains cobalt and lithium and has a layered rock salt structure. The (003) plane is oriented so as to intersect the plate surface of the particle or film. | 07-08-2010 |
20100178563 | COMPOSITE NEGATIVE ELECTRODE ACTIVE MATERIAL AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - Disclosed is a composite negative electrode active material including a graphitizable carbon material containing a layered structure formed of stacked carbon layers partially having a three-dimensional regularity, and a low crystalline carbon material. A negative electrode including the composite negative electrode active material is used to produce a non-aqueous electrolyte secondary battery. The non-aqueous electrolyte secondary battery thus produced has a high energy density and demonstrates a high output/input performance for a long period of time in various environments of high to low temperatures. | 07-15-2010 |
20100178564 | ENERGY STORAGE DEVICE, METHOD FOR MANUFACTURING THE SAME, AND APPARATUS INCLUDING THE SAME - The present invention provides a highly reliable energy storage device capable of preventing a reaction current from flowing in a carbon nanotube electrode by ionizing a catalyst metal or a substrate metal to cause the metal to flow out to an electrolytic solution. An energy storage device of the present invention includes: at least a pair of electrode bodies that are a cathode and an anode; and an electrolytic solution. At least one of the electrode bodies is configured such that a layer of carbon nanotubes is formed on an electric conductor. A coupling region where one ends of the carbon nanotubes are coupled to and electrically connected to the electric conductor and a non-coupling region where ends of the carbon nanotubes are not coupled to the electric conductor are formed on a surface of the electric conductor. The carbon nanotubes having one ends connected to the coupling region are toppled to cover a surface of the non-coupling region. | 07-15-2010 |
20100203390 | NON-AQUEOUS ELECTROLYTE BATTERY - A non-aqueous electrolyte battery including a negative electrode including metal lithium or a lithium alloy as a negative electrode active material, a positive electrode including a fluorinated graphite as a positive electrode active material, a separator provided between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The concentration ratio [F]/[C] of fluorine atoms to carbon atoms on the surface of the fluorinated graphite is 1.0 or more and less than 1.8. This improves the large-current discharge characteristics particularly in a low temperature environment. | 08-12-2010 |
20100203391 | MESOPOROUS CARBON MATERIAL FOR ENERGY STORAGE - A mesoporous carbon material formed on an electrode surface in an energy storage device, and a method of forming the same are disclosed. The mesoporous carbon material acts as a high surface area ion intercalation medium for the energy storage device, and is made up of CVD-deposited carbon fullerene “onions” and carbon nanotubes (CNTs) that are interconnected in a fullerene/CNT hybrid matrix. The fullerene/CNT hybrid matrix is a high porosity material that is capable of retaining lithium ions in concentrations useful for storing significant quantities of electrical energy. The method, according to one embodiment, includes vaporizing a high molecular weight hydrocarbon precursor and directing the vapor onto a conductive substrate to form a mesoporous carbon material thereon. | 08-12-2010 |
20100239913 | EXTERNAL STABILIZATION OF CARBON FOAM - According to one aspect, the present disclosure is directed toward an electrode plate for an energy storage device. The electrode plate may include a carbon foam current collector and an external restraint structure. A chemically active material may be disposed on the carbon foam current collector. | 09-23-2010 |
20100239914 | CATHODE FOR LITHIUM BATTERY - The present invention relates to cathodes used in electrochemical cells. A force, or forces, applied to portions of an electrochemical cell as described in this application can reduce irregularity or roughening of an electrode surface of the cell, improving performance. The cathodes described herein may possess enhanced properties that render them particularly suitable for use in electrochemical cells designed to be charged and/or discharged while a force is applied. In some embodiments, the cathode retains sufficient porosity to charge and discharge effectively when a force is applied to the cell. Cathodes described herein may also comprise relatively high electrolyte-accessible conductive material (e.g., carbon) areas. The cathode may comprise a relatively low ratio of the amount of binder and/or mass of electrolyte to cathode active material (e.g., sulfur) ratio in some instances. In some embodiments, electrochemical cells comprising the cathodes described herein may achieve relatively high specific capacities and/or relatively high discharge current densities. In addition, the cathode described herein may exhibit relatively high cathode active material (e.g., sulfur) utilization during charge and discharge. In still further cases, the electrical conductivity between conductive material in the cathode (e.g., carbon) may be enhanced during the application of the force. | 09-23-2010 |
20100248034 | COMPOSITE MATERIAL FOR POSITIVE ELECTRODE OF LITHIUM BATTERY - The present invention provides a composite material for positive electrodes of lithium batteries, which provides a lithium battery having excellent high rate electrical discharge characteristics, has a sufficiently secured diffusion passage for Li, and has high conductivity, a process for producing the same, as well as a positive electrode and a battery using the composite material for positive electrodes of lithium batteries. The present invention relates to a composite material for positive electrodes of lithium batteries, comprising composite particles containing positive electrode active material particles and fibrous carbons, wherein the composite particles have a form in which the positive electrode active material particles are supported by the fibrous carbons. | 09-30-2010 |
20100255376 | GAS PHASE DEPOSITION OF BATTERY SEPARATORS - In certain embodiments, a gas phase deposited porous separator is provided. The porous separator can be deposited onto an electrode. The electrode can include at least one cavity or protrusion, and the separator layer can be gas phase deposited onto a surface of the at least one cavity or protrusion. In certain embodiments, a method of gas phase depositing a separator layer is provided. | 10-07-2010 |
20100255377 | NONAQUEOUS LITHIUM-TYPE STORAGE ELEMENT - This invention provides a nonaqueous lithium-type storage element using an activated carbon having a specific porous structure in a positive electrode. A storage element using a conventional carbonaceous material in a positive electrode has a problem that, although the capacitance is large, the output characteristics are disadvantageously unsatisfactory. The nonaqueous lithium-type storage element using a material, which can occlude and release lithium ions in a negative electrode, can improve output characteristics while maintaining the energy density of the storage element at a substantially equal value by using, in a positive electrode, an activated carbon, satisfying 0.310-07-2010 | |
20100261061 | Positive electrode material for lithium secondary battery, positive electrode plate for lithium secondary battery, and lithium secondary battery using the same - A positive electrode material for a lithium secondary battery according to the invention includes a positive electrode active material containing lithium oxide and a carbon composite obtained by dispersing carbon fiber and a clamped shape carbon material, and the positive electrode active material is combined with the carbon composite. In the positive electrode material for a lithium secondary battery constructed as described above, a conductive network between primary particles is formed by the carbon composite while the positive electrode active material (primary particles) are condensed to form secondary particles. | 10-14-2010 |
20100261062 | CRIMPED CARBON FIBER AND PRODUCTION METHOD THEREOF - An electrode comprising a crimped carbon fiber having a multilayer structure comprising a hollow structure in the inside, with the inner layer part having a carbon structure containing a herringbone structure and the outer layer part having a carbon structure differing from the carbon structure of the inner part. | 10-14-2010 |
20100266901 | Lithium Oxygen Battery Having Enhanced Anode Environment - An anode environment mitigates undesired effects of oxygen upon the anode of a lithium-oxygen electrochemical cell. As a means of mitigating oxygen effect, a lithium anode and an air cathode are separated from one another by a lithium-ion-conductive electrolyte separator including material having low oxygen permeability that reduces the amount of oxygen that contacts the anode. As another means of mitigating oxygen effect, a cell comprises lithium-affinity anode material capable of receiving and retaining lithium in a state that is not significantly adversely affected by the presence of oxygen during cell charging and recharging and an air cathode separated by a lithium-ion-conductive electrolyte separator. Lithium-affinity material is capable of drawing lithium thereinto during charging of the cell and retaining the lithium substantially until discharge of the cell. A cell having a lithium-affinity anode may also have a lithium-ion-conductive electrolyte separator including material having low oxygen permeability. | 10-21-2010 |
20100273060 | HIGH-THROUGHPUT SOLUTION PROCESSING OF LARGE SCALE GRAPHENE AND DEVICE APPLICATIONS - A method of producing carbon macro-molecular structures includes dissolving a graphitic material in a solvent to provide a suspension of carbon-based macro-molecular structures in the solvent, and obtaining a plurality of the carbon macro-molecular structures from the suspension. The plurality of carbon macro-molecular structures obtained from the suspension each consists essentially of carbon. A material according to some embodiments of the current invention is produced according to the method of producing carbon macro-molecular structures. An electrical, electronic or electro-optic device includes material produced according to the methods of the current invention. A composite material according to some embodiments of the current invention has carbon macro-molecular structures produced according to methods of producing carbon macro-molecular structures according to some embodiments of the current invention. A hydrogen storage device according to some embodiments of the current invention has carbon macro-molecular structures produced according to methods of producing carbon macro-molecular structures according to some embodiments of the current invention. An electrode according to some embodiments of the current invention has carbon macro-molecular structures produced according to methods of producing carbon macro-molecular structures according to some embodiments of the current invention. | 10-28-2010 |
20100291440 | Battery Electrode - A material suitable for use as an electrode for a battery, comprising an article which comprises carbonized fabric having an impregnant therein. | 11-18-2010 |
20100297500 | Negative Electrode Active Material for Lithium Ion Rechargeable Battery and Negative Electrode Using the Same - A negative electrode active material for a lithium ion rechargeable battery having high electrode density, excellent in permeability of an electrolyte, less in capacity loss due to charging/discharging, and excellent in cycle performance is provided at a low cost. Further, there is provided a negative electrode for the lithium ion rechargeable battery, wherein the negative electrode active material as a mixture of three kinds of graphite powders, different in hardness and shape from one another, with a binder added thereto, is coated onto a metallic current collector to be dried and pressed, thereby rendering an electrode density not lower than 1.7 g/cm | 11-25-2010 |
20100297501 | NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY USING THE SAME - The objects of the present invention are to provide a negative electrode for lithium secondary battery which can simultaneously satisfy high energy density and good charge/discharge cyclic characteristics, and to provide a lithium secondary battery which uses the negative electrode.
| 11-25-2010 |
20100297502 | Nanostructured Materials for Battery Applications - The present invention relates to nanostructured materials (including nanowires) for use in batteries. Exemplary materials include carbon-comprising, Si-based nanostructures, nanostructured materials disposed on carbon-based substrates, and nanostructures comprising nanoscale scaffolds. The present invention also provides methods of preparing battery electrodes, and batteries, using the nanostructured materials. | 11-25-2010 |
20100304218 | STIMULATED EMISSION RELEASE OF CHEMICAL ENERGY STORED IN STONE-WALES DEFECT PAIRS IN CARBON NANOSTRUCTURES - Stone Wales defect pairs in a carbon nanostructure are used to store energy. Energy is released by a chain reaction of phonons disrupting the defect pairs to generate more phonons until the lattice returns to its original hexagonal form and the energy is released in the form of lattice vibrations. Devices may be configured as a battery to release electrical energy in a controlled manner or as an explosive to release energy in an uncontrolled manner. | 12-02-2010 |
20100310939 | NEGATIVE ELECTRODE ACTIVE MATERIAL, LITHIUM SECONDARY BATTERY USING THE SAME, AND METHOD OF MANUFACTURING NEGATIVE ELECTRODE ACTIVE MATERIAL - A negative electrode active material characterized in that carbonaceous matter essentially consisting of carbon adheres to the surface of a tin particle essentially consisting of tin, with a mixture phase, in which tin and carbon are mixed, interposed between the carbonaceous matter and the tin particle. | 12-09-2010 |
20110003207 | Anode Composition Comprising Acrylonitrile-Acrylic Acid Copolymer As Binder, Method For Preparing The Anode Composition And Lithium Secondary Battery Using The Anode Composition - An anode composition for a lithium secondary battery is provided. The anode composition comprises an anode active material, a conductive material, and an acrylonitrile-acrylic acid copolymer with a high molecular weight as a binder. The acrylonitrile-acrylic acid copolymer has a molar ratio of acrylonitrile to acrylic acid of 1:0.01-2. Further provided are a method for preparing the anode composition and a lithium secondary battery using the anode composition. The binder has improved resistance to an electrolyte solution due to its enhanced adhesive strength. In addition, the use of the anode composition prevents the active material layer from being peeled off or separated from a current collector during charge and discharge to achieve improved capacity and cycle life characteristics of the battery. | 01-06-2011 |
20110008678 | ELECTRODE MATERIALS FOR SECONDARY (RECHARGEABLE) ELECTROCHEMICAL CELLS AND THEIR METHOD OF PREPARATION - An electrode material for a rechargeable electrochemical cell comprises a metal phosphate of general composition M1M2PO | 01-13-2011 |
20110020706 | NEW ELECTRODE MATERIALS, IN PARTICULAR FOR RECHARGEABLE LITHIUM ION BATTERIES - The method described allows the selection and/or design of anode and cathode materials by n- or p-doping semiconductor material. Such doped materials are suitable for use in electrodes of lithium ion batteries. As one advantage, the anode and the cathode may be produced using anodes and cathodes that are derived from the same semiconductor material. | 01-27-2011 |
20110020707 | ELECTRODE COLLECTOR MANUFACTURING METHOD AND MANUFACTURING APPARATUS, AND BATTERY PROVIDED WITH SAID COLLECTOR - An electrode collector manufacturing apparatus ( | 01-27-2011 |
20110027655 | Electrodes Including Collar Stop - An electrode including structures configured to prevent an intercalation layer from detaching from the electrode and/or a structure configured to create a region on the electrode having a lower concentration of intercalation material. The electrode includes a support filament on which the intercalation layer is disposed. The support filament optionally has nano-scale dimensions. | 02-03-2011 |
20110045353 | NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY - A negative electrode for a lithium secondary battery includes a layer of a mixture containing graphite powder and an organic binder on a current collector, wherein a diffraction intensity ratio (002)/(110) measured by X-ray diffractometry of the layer of a mixture is 500 or less. A lithium secondary battery includes the negative electrode for a lithium secondary battery, and a positive electrode that includes a lithium compound. This results in less deterioration in the rapid charge and discharge characteristics and the cycle characteristics when the density of the negative electrode is made higher, thereby providing a high capacity lithium secondary battery having the improved energy density per unit volume of the secondary battery. | 02-24-2011 |
20110045354 | ARTIFICIAL GRAPHITE PARTICLES AND METHOD FOR MANUFACTURING SAME, NONAQUEOUS ELECTROLYTE SECONDARY CELL NEGATIVE ELECTRODE AND METHOD FOR MANUFACTURING SAME, AND LITHIUM SECONDARY CELL - Artificial graphite particles, having a secondary particle structure in which a plurality of primary particles composed of graphite are clustered or bonded together, and having a layer structure in which the edge portion of the primary particles is bent in a polyhedral shape. | 02-24-2011 |
20110052996 | LITHIUM-ION SECONDARY BATTERY - A lithium-ion secondary battery comprises a negative electrode active material, a positive electrode active material, and an electrolytic solution. The negative electrode active material contains elemental silicon or a silicon-containing alloy. The electrolytic solution has a lithium salt and a solvent. The solvent contains a cyclic carbonate, a chain carbonate, fluoroethylene carbonate represented by the formula (1), and 1,3-propane sultone. In the electrolytic solution, fluoroethylene carbonate has a mass concentration Cf of 0.1 to 3 mass %, 1,3-propane sultone has a mass concentration Cp of 0.1 to 3 mass %, and Cf>Cp. | 03-03-2011 |
20110059364 | AIR ELECTRODES FOR HIGH-ENERGY METAL AIR BATTERIES AND METHODS OF MAKING THE SAME - Disclosed herein are embodiments of lithium/air batteries and methods of making and using the same. Certain embodiments are pouch-cell batteries encased within an oxygen-permeable membrane packaging material that is less than 2% of the total battery weight. Some embodiments include a hybrid air electrode comprising carbon and an ion insertion material, wherein the mass ratio of ion insertion material to carbon is 0.2 to 0.8. The air electrode may include hydrophobic, porous fibers. In particular embodiments, the air electrode is soaked with an electrolyte comprising one or more solvents including dimethyl ether, and the dimethyl ether subsequently is evacuated from the soaked electrode. In other embodiments, the electrolyte comprises 10-20% crown ether by weight. | 03-10-2011 |
20110065005 | ROTARY KILN AND BATTERY MATERIAL MANUFACTURED BY THE ROTARY KILN - A rotary kiln includes a cylindrical shell that rotates about its own axis and that has a heat treatment chamber provided radially inward of the shell. In the rotary kiln, a heat treatment is performed on a process material in the heat treatment chamber to manufacture a battery material. The shell is made of a carbon material. Since the shell is made of a carbon material, the rotary kiln can suppress contamination of metal scale, which adversely affects the battery material, into the battery material. | 03-17-2011 |
20110076565 | Negative active material for rechargeable lithium battery, method of preparing the same, and rechargeable lithium battery including the same - The present invention provides a negative active material for a rechargeable lithium battery, including an inner layer including a material being capable of doping and dedoping lithium, a carbon layer outside the inner layer, and an outer layer disposed on the carbon layer and including a material being capable of doping and dedoping lithium. The materials being capable of doping and dedoping lithium included in the inner layer and in the outer layer may be the same or different from each other. | 03-31-2011 |
20110091773 | Nano-Structured Lithium-Sulfur Battery And Method Of Making Same - An apparatus includes a first conductive substrate (e.g., a metal foil) having a first surface; a plurality of conductive stalks (e.g., carbon nano-tubes) extending from the first surface; an electrically insulating coating (e.g., sulfur) about the carbon stalks; a second conductive substrate (e.g., a lithium oxide foil); and an electrolyte (e.g., a polymer electrolyte) disposed between the first surface of the first conductive substrate and the second conductive substrate. In various embodiments: the sulfur is disposed at a thickness of about 3 nanometers +−1 nanometer; the stalks are at a density such that a gap between them as is between 2 and 200 diameters of an ion transported through the electrolyte; and there is a separator layer within the electrolyte having a porosity amenable to passage by such ions. Also detailed is a method for making the foil with the coated carbon nano-tubes. | 04-21-2011 |
20110097629 | Negative Active Material for Rechargeable Lithium Battery and Rechargeable Lithium Battery Including Same - A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The negative active material includes Si-based material core, a carbon coating layer coating the surface of the Si-based material core, and an inorganic salt position on the surface of the carbon coating layer. | 04-28-2011 |
20110111303 | ELECTRODE MATERIAL COMPRISING GRAPHENE COMPOSITE MATERIALS IN A GRAPHITE NETWORK FORMED FROM RECONSTITUTED GRAPHENE SHEETS - A durable electrode material suitable for use in Li ion batteries is provided. The material is comprised of a continuous network of graphite regions integrated with, and in good electrical contact with a composite comprising graphene sheets and an electrically active material, such as silicon, wherein the electrically active material is dispersed between, and supported by, the graphene sheets. | 05-12-2011 |
20110111304 | PRELOADING LITHIUM ION CELL COMPONENTS WITH LITHIUM - Provided are novel negative electrodes for use in lithium ion cells. The negative electrodes include one or more high capacity active materials, such as silicon, tin, and germanium, and a lithium containing material prior to the first cycle of the cell. In other words, the cells are fabricated with some, but not all, lithium present on the negative electrode. This additional lithium may be used to mitigate lithium losses, for example, due to Solid Electrolyte Interphase (SEI) layer formation, to maintain the negative electrode in a partially charged state at the end of the cell discharge cycle, and other reasons. In certain embodiments, a negative electrode includes between about 5% and 25% of lithium based on a theoretical capacity of the negative active material. In the same or other embodiments, a total amount of lithium available in the cell exceeds the theoretical capacity of the negative electrode active material. | 05-12-2011 |
20110117436 | Silicon Whisker and Carbon Nanofiber Composite Anode - A carbon nanofiber can have a surface and include at least one crystalline whisker extending from the surface of the carbon nanofiber. A battery anode composition can be formed from a plurality of carbon nanofibers each including a plurality of crystalline whiskers. | 05-19-2011 |
20110136013 | Material for coating a positive electrode of a lithium-ion battery and a method for making the same - A method is disclosed for coating a positive active material of a lithium-ion battery. The method includes the step of dissolving at least one salt that contains a coating metal in a solvent to provide a solution, the step of dissolving a lithium-containing positive active material in the solution and adjusting the pH value of the solution to deposit M(OH) | 06-09-2011 |
20110136014 | LITHIUM METAL PHOSPHATE/CARBON NANOCOMPOSITES AS CATHODE ACTIVE MATERIALS FOR RECHARGEABLE LITHIUM BATTERIES - A process for the synthesis of lithium metal phosphate/carbon nanocomposites as cathode active materials in rechargeable electrochemical cells comprising mixing and reacting precursors of lithium, transition metal(s) and phosphate with high surface area activated carbon, preferably phosphorylated carbon. | 06-09-2011 |
20110136015 | METHOD OF PRODUCING NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - A method of producing a non-aqueous electrolyte secondary battery of the present invention includes the steps of: (1) producing a negative electrode precursor by applying a negative electrode slurry including graphite particles and a binder onto a negative electrode core material and drying the same to form a negative electrode material mixture layer; and (2) producing a negative electrode by compressing while heating the negative electrode precursor at a temperature at which the binder softens. In the step (2), a temperature at which the negative electrode precursor is heated and a force with which the negative electrode precursor is compressed are controlled such that the compressed negative electrode material mixture layer in the negative electrode includes 1.5 g or more of the graphite particles per 1 cm | 06-09-2011 |
20110165466 | Lithium metal-sulfur and lithium ion-sulfur secondary batteries containing a nano-structured cathode and processes for producing same - An electrochemical cell comprising an anode, electrolyte or an electrolyte/separator combination, and a nano-structured cathode, wherein the cathode comprises: (a) an integrated nano-structure of electrically conductive nanometer-scaled filaments that are interconnected to form a porous network of electron-conducting paths comprising pores with a size smaller than 100 nm (preferably smaller than 10 nm), wherein the filaments have a transverse dimension less than 500 nm (preferably less than 100 nm); and (b) powder or salt of lithium-containing sulfide (lithium polysulfide) disposed in the pores, or a thin coating of lithium-containing sulfide deposited on a nano-scaled filament surface wherein the lithium-containing sulfide is in contact with, dispersed in, or dissolved in electrolyte liquid and the lithium-containing sulfide-to-filament weight ratio is between 1/10 and 10/1 which is measured when the cell is in a fully discharged state. The cell exhibits an exceptionally high specific energy and a long cycle life. | 07-07-2011 |
20110165467 | NEGATIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - Disclosed are a negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. The negative electrode includes a current collector, a negative active material composition layer disposed on the surface of the current collector and including a negative active material, and an inorganic salt layer disposed on the surface of the negative active material composition layer and including an inorganic salt. The negative active material includes a silicon-based core and a carbon layer disposed on the surface of the silicon-based core. The inorganic salt includes an alkaline metal cation selected from a Na cation, a K cation, or a combination thereof; and an anion selected from a carbonate anion, a halogen anion, or a combination thereof. | 07-07-2011 |
20110165468 | PROCESS FOR PREPARING A SILICON/CARBON COMPOSITE MATERIAL, MATERIAL THUS PREPARED AND ELECTRODE NOTABLY NEGATIVE ELECTRODE COMPRISING THIS MATERIAL - Process for preparing composite silicon/carbon material composed of carbon-coated silicon particles, wherein the following successive steps are carried out: silicon particles are mixed with a solution of an oxygen-free polymer in a solvent, whereby a dispersion of silicon particles in the polymer solution is obtained; the dispersion obtained in step a) is subjected to a spray-drying operation whereby a composite silicon/polymer material consisting of silicon particles coated with the polymer is obtained; the material obtained in step a) is pyrolyzed whereby the composite silicon/carbon material composed of carbon-coated silicon particles is obtained. | 07-07-2011 |
20110171531 | Multifunctional Nanocomposites of Carbon Nanotubes and Nanoparticles Formed Via Vacuum Filtration - In one aspect, the present invention provides a method of forming a film of nanocomposites of carbon nanotubes (CNTs) and platinum (Pt) nanoparticles. In one embodiment, the method includes the steps of (a) providing a first solution that contains a plurality of CNTs, (b) providing a second solution that contains a plurality of Pt nanoparticles, (c) combining the first solution and the second solution to form a third solution, and (d) filtering the third solution through a nanoporous membrane using vacuum filtration to obtain a film of nanocomposites of CNTs and Pt nanoparticles. | 07-14-2011 |
20110171532 | COMPOSITE GRAPHITE PARTICLE FOR NONAQUEOUS SECONDARY BATTERY, NEGATIVE ELECTRODE MATERIAL CONTAINING THE SAME, NEGATIVE ELECTRODE AND NONAQUEOUS SECONDARY BATTERY - To provide a nonaqueous secondary battery exhibiting a sufficiently small charge/discharge irreversible capacity in the initial cycle, exhibiting an excellent charge acceptance and excellent cycle characteristics, even when the negative electrode material-containing active material layer on a current collector is highly densified so as to obtain a high capacity. A composite graphite particle for nonaqueous secondary batteries, which is a composite graphite particle (B) obtained by forming a spherical graphite particle (A) and a graphitized product of graphitizable binder, wherein the spherical graphite particle (A) is a specific graphite particle or the composite graphite particle satisfies (a) and/or (b):
| 07-14-2011 |
20110177393 | COMPOSITE MATERIALS FOR ELECTROCHEMICAL STORAGE - Composite materials and methods of forming composite materials are provided. The composite materials described herein can be utilized as an electrode material for a battery. In certain embodiments, the composite material includes greater than 0% and less than about 90% by weight silicon particles, and greater than 0% and less than about 90% by weight of one or more types of carbon phases. At least one of the one or more types of carbon phases can be a substantially continuous phase. The method of forming a composite material can include providing a mixture that includes a precursor and silicon particles, and pyrolysing the precursor to convert the precursor into one or more types of carbon phases to form the composite material. | 07-21-2011 |
20110195311 | NEGATIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, METHOD FOR MANUFACTURING THEREOF, AND RECHARGEABLE LITHIUM BATTERY COMPRISING THE SAME - A negative electrode for a rechargeable lithium battery includes at least one layered unit including a Sn-based metal plating layer and a carbon layer on the metal plating layer. Rechargeable lithium batteries including the negative electrode exhibit improved charge and discharge capacities, and have good capacity retention characteristics even after repeated charge and discharge. | 08-11-2011 |
20110195312 | CARBON MATERIAL AND ELECTRICITY STORAGE DEVICE - Achieved is an electricity storage device having a low internal resistance and a high energy density. In a pore distribution, which is obtained for a carbon material using a BJH method and is plotted on a graph with a pore diameter D on the abscissa and a derivative ΔV/ΔD of a pore volume per unit mass or unit volume with respect to the pore diameter D on the ordinate, a ratio M1/M2 of the maximum value M1 of the derivative ΔV/ΔD in an interval of the pore diameter D from 10 to 100 nm with respect to the maximum value M2 of the derivative ΔV/ΔD in an interval of the pore diameter D from 2 to 10 nm is 1.5 or more. | 08-11-2011 |
20110195313 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING THE SAME, AND RECHARGEABLE LITHIUM BATTERY COMPRISING THE SAME - Disclosed is a negative active material for a rechargeable lithium battery is provided that includes composite particles including an amorphous or semi-crystalline carbon matrix, and crystalline graphite powder particles having an average particle diameter of 0.2 to 3 μm dispersed in the matrix. The composite particles have an average particle diameter of 4 to 40 μm. A method of preparing the same and a rechargeable lithium battery including the negative active material are also disclosed. | 08-11-2011 |
20110229766 | CARBON CATALYST, METHOD FOR MANUFACTURING THE CARBON CATALYST, AND ELECTRODE AND BATTERY USING THE CARBON CATALYST - Provided are a carbon catalyst having an excellent activity and a method of manufacturing a carbon catalyst, and an electrode and a battery each using the carbon catalyst. The method of manufacturing a carbon catalyst according to the present invention includes a carbonizing step S | 09-22-2011 |
20110236759 | LITHIUM-ION SECONDARY BATTERY AND METHOD OF MANUFACTURING SAME - A lithium-ion secondary battery of this invention comprises a separator interposed between a positive electrode and a negative electrode. Moreover, a porous film of lithium titanate is formed on the surface of the negative electrode. In this lithium-ion secondary battery, when the separator is ruptured, short-circuiting of the positive electrode and negative electrode is suppressed by the lithium titanate porous film formed on the surface of the negative electrode. Further, in this configuration, a decline in the characteristics of storage of lithium ions in the negative electrode at low temperatures (low-temperature input characteristics) is suppressed. | 09-29-2011 |
20110244333 | NEGATIVE ELECTRODE MATERIAL FOR SECONDARY BATTERY WITH NON-AQUEOUS ELECTROLYTE, METHOD FOR MANUFACTURING NEGATIVE ELECTRODE MATERIAL FOR SECONDARY BATTERY WITH NON-AQUEOUS ELECTROLYTE, AND LITHIUM ION SECONDARY BATTERY - The present invention is a method for manufacturing a negative electrode material for a secondary battery with a non-aqueous electrolyte comprising at least: coating a surface of powder with carbon at a coating amount of 1 to 40 mass % with respect to an amount of the powder by heat CVD treatment under an organic gas and/or vapor atmosphere at a temperature between 800° C. and 1300° C., the powder being composed of at least one of silicon oxide represented by a general formula of SiO | 10-06-2011 |
20110244334 | NEGATIVE ELECTRODE MATERIAL FOR SECONDARY BATTERY WITH NON-AQUEOUS ELECTROLYTE, METHOD FOR MANUFACTURING NEGATIVE ELECTRODE MATERIAL FOR SECONDARY BATTERY WITH NON-AQUEOUS ELECTROLYTE, AND LITHIUM ION SECONDARY BATTERY - The present invention is a negative electrode material for a secondary battery with a non-aqueous electrolyte comprising at least a silicon-silicon oxide composite and a carbon coating formed on a surface of the silicon-silicon oxide composite, wherein at least the silicon-silicon oxide composite is doped with lithium, and a ratio I(SiC)/I(Si) of a peak intensity I(SiC) attributable to SiC of 2θ=35.8±0.2° to a peak intensity I(Si) attributable to Si of 2θ=28.4±0.2° satisfies a relation of I(SiC)/I(Si)≦0.03, when x-ray diffraction using Cu—Kα ray. As a result, there is provided a negative electrode material for a secondary battery with a non-aqueous electrolyte that is superior in first efficiency and cycle durability to a conventional negative electrode material. | 10-06-2011 |
20110262812 | NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD OF THE SAME, AND LITHIUM SECONDARY BATTERY CONTAINING THE SAME - The present invention relates to a negative electrode active material for a lithium secondary battery, a preparation method thereof, and a lithium secondary battery containing the negative electrode active material. The negative electrode active material for the lithium secondary battery according to the present invention is formed by mixing: a carbon material coated with vapor growth carbon fiber (VGCF) and amorphous graphite; and one or more kinds of other carbon material selected from natural graphite, artificial graphite, amorphous-coated graphite, resin-coated graphite and amorphous carbon. According to the present invention, when the negative electrode active material is prepared, the carbon fiber is uniformly dispersed throughout the carbon material, and the carbon material is coated with the amorphous graphite and then mixed with other carbon materials, and thus, a high electrode density can be achieved. Accordingly, even with high electrode density, the invention can provide the negative electrode active material with excellent electrochemical properties such as charge/discharge efficiency and cycle characteristics. | 10-27-2011 |
20110274978 | NEGATIVE ELECTRODE FOR ENERGY STORAGE DEVICE AND ENERGY STORAGE DEVICE INCLUDING SAME - Disclosed is a negative electrode for an energy storage device, which includes a negative active material, and an additive including a ceramic core and carbon disposed on the surface of the ceramic core. | 11-10-2011 |
20110274979 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING SAME, AND RECHARGEABLE LITHIUM BATTERY - A negative active material for a rechargeable lithium battery, a method of manufacturing the same, and a rechargeable lithium battery including the negative active material. The negative active material includes carbon particles having interplanar spacing (d002) ranging from about 0.34 nm to about 0.50 nm at a 002 plane, measured by X-ray diffraction using CuKα, and nitrogen on the surface of the carbon particles. | 11-10-2011 |
20110281169 | ELECTRODE FOR A FLOW BATTERY - Enclosed is an electrode for a flow battery, which comprises a graphite felt ( | 11-17-2011 |
20110300447 | Carbon Coated Anode Materials - Nano-colloids of near monodisperse, carbon-coated SnO | 12-08-2011 |
20110300448 | ANODE OF LITHIUM BATTERY AND LITHIUM BATTERY USING THE SAME - An anode of a lithium battery includes a composite film, the composite film includes a carbon nanotube film structure and a plurality of nanoscale tin oxide particles dispersed therein. A lithium battery includes at least a cathode, an electrolyte, and the anode mentioned above. A charge/discharge capacity of the lithium battery using the anode can be improved. | 12-08-2011 |
20110305956 | ELECTRODE CONDUCTIVE MATERIAL, ELECTRODE MATERIAL INCLUDING THE CONDUCTIVE MATERIAL, AND ELECTRODE AND LITHIUM BATTERY EACH INCLUDING THE ELECTRODE MATERIAL - An electrode conductive material, an electrode material including the electrode conductive material, an electrode including the electrode material, and a lithium battery including the electrode material. When the electrode conductive material is used, the amount of a conductive material required is decreased, capacity of the lithium battery is improved, and a charge and discharge rate is increased. | 12-15-2011 |
20110311873 | INTERCALATION OF SILICON AND/OR TIN INTO POROUS CARBON SUBSTRATES - The invention relates to a process for producing an electrically conductive, porous, silicon- and/or tin-containing carbon material which is suitable in particular for the production of an anode material, preferably for lithium ion batteries; in a first step of the process, preferably crystalline silicon nanoparticies and/or tin nanoparticies and/or silicon/tin nanoparticles are introduced into a matrix based on at least one organic polymer, being more particular dispersed therein, and subsequently, in a second step of the process, the resultant polymer matrix containing the silicon, tin and/or silicon/tin nanoparticies is carbonized to form carbon. | 12-22-2011 |
20110311874 | Silicon-Carbon Nanostructured Electrodes - Hybrid silicon-carbon nanostructured electrodes are fabricated by forming a suspension including carbon nanostructures and a fluid, disposing the suspension on a substrate, removing at least some of the fluid from the suspension to form a carbon nanostructure layer on the substrate, and sputtering a layer of silicon over the carbon nanostructure layer to form the hybrid silicon-carbon nanostructured electrode. Sputtering the layer of silicon facilitates fabrication of large dimension electrodes at room temperature. The hybrid silicon-carbon nanostructured electrode may be used as an anode in a rechargeable battery, such as a lithium ion battery. | 12-22-2011 |
20110318640 | PLATE-LIKE PARTICLE OF CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, CATHODE OF THE LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY - To provide a lithium secondary battery which has high capacity while maintaining excellent charge-discharge characteristic, and to provide a cathode of the lithium secondary battery and a plate-like particle for cathode active material to be contained in the cathode. The plate-like particle of cathode active material for a lithium secondary battery of the present invention has a layered rock salt structure, a thickness of 5 μm or more and less than 30 μm, 2 or less of [003]/[104] which is a ratio of intensity of X-ray diffraction by the (003) plane to intensity of X-ray diffraction by the (104) plane, a mean pore size of 0.1 to 5 μm, and a voidage of 3% or more and less than 15% | 12-29-2011 |
20110318641 | PLATE-LIKE PARTICLE OF CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, CATHODE OF THE LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY - To provide a lithium secondary battery which has high capacity while maintaining excellent charge-discharge characteristic, and to provide a cathode of the lithium secondary battery and a plate-like particle for cathode active material to be contained in the cathode. The plate-like particle of cathode active material for a lithium secondary battery of the present invention has a layered rock salt structure, a thickness of 5 μm or more and less than 30 μm, 2 or less of [003]/[104] which is a ratio of intensity of X-ray diffraction by the (003) plane to intensity of X-ray diffraction by the (104) plane, a voidage of 3% or more and less than 30%, and an open pore ratio of 70% or higher. | 12-29-2011 |
20110318642 | CONDUCTIVE SHEET AND ELECTRODE - The present invention provides a conductive sheet having a surface resistance of 10 Ω/sq or lower on both surfaces, the conductive sheet comprising a sheet (A) and a sheet (B) laminated to the sheet (A), the sheet (A) having an apparent specific gravity of 0.05 g/cm | 12-29-2011 |
20120003544 | ELECTRODE STRUCTURE, CAPACITOR, BATTERY, AND METHOD FOR MANUFACTURING ELECTRODE STRUCTURE - Provided are an electrode structure which is excellent in adhesiveness between an aluminum material as a base material and a dielectric layer and adhesiveness between the dielectric layers and allows a higher capacitance than the conventional one to be obtained, even when a thickness of the dielectric layer is thick; a method for manufacturing the above-mentioned electrode structure; and a capacitor and a battery, each of which includes the above-mentioned electrode structure. An electrode structure comprises: an aluminum material; a dielectric layer formed on a surface of the aluminum material; and an interposing layer formed in at least one part of a region of the surface of the aluminum material between the aluminum material and the dielectric layer and including aluminum and carbon, the dielectric layer includes dielectric particles including valve metal, and an organic substance layer is formed on at least one part of a surface of the dielectric particle. A mixture layer of dielectric particles including the valve metal and a binder is formed on a surface of the aluminum material, and thereafter, the aluminum material is heated in a state where the aluminum material is placed in a space including a hydrocarbon-containing substance. | 01-05-2012 |
20120009478 | CRYSTALLINE CARBONACEOUS MATERIAL WITH CONTROLLED INTERLAYER SPACING AND METHOD OF PREPARING SAME - A crystalline carbonaceous material with a controlled interlayer spacing and a method of manufacturing the same. In one embodiment, a crystalline carbonaceous material has a layered structure including a plurality of layers and where a filler is present between the layers. The layers with the filler have an interlayer spacing d002 at a (002) plane, and the interlayer spacing d002 is at or between 0.335 nm and 1 nm when its X-ray diffraction is measured using a CuKα ray. | 01-12-2012 |
20120021294 | Graphite or carbon particulates for the lithium ion battery anode - This invention provides a graphite or graphite-carbon particulate for use as a lithium secondary battery anode material having a high-rate capability. The particulate is formed of a core carbon or graphite particle and a plurality of satellite carbon or graphite particles that are each separately bonded to the core particle wherein the core particle is spherical in shape, slightly elongate in shape with a major axis-to-minor axis ratio less than 2, or fibril in shape, and wherein the satellite particles are disc-, platelet-, or flake-like particles each containing a graphite crystallite with a crystallographic c-axis dimension Lc and a lateral dimension. Preferably, Lc is less than 100 nm and the flake/platelet lateral dimension is less than 1 μm. The core particle may be selected from natural graphite, artificial graphite, spherical graphite, graphitic coke, meso-carbon micro-bead, soft carbon, hard carbon, graphitic fibril, carbon nano-fiber, carbon fiber, or graphite fiber. Preferably, the flat-shaped particles are randomly oriented with respect to one another. | 01-26-2012 |
20120028123 | CARBON NANOTUBE FORMING SUBSTRATE, CARBON NANOTUBE COMPLEX, ENERGY DEVICE, METHOD FOR MANUFACTURING ENERGY DEVICE, AND APPARATUS INCLUDING ENERGY DEVICE - Provided are a substrate on which carbon nanotubes each having one end connected to the substrate can be formed at a high synthetic rate and from which the carbon nanotubes are less likely to be peeled off. The substrate is a substrate for forming the carbon nanotubes and includes a buffer layer | 02-02-2012 |
20120040249 | Negative active material for a rechargeable lithium battery, method of preparing the same, and rechargeable lithium battery including the same - A negative active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same, the negative active material including carbon core particles; a metallic material on the carbon core particles; and a carbon thin film covering the carbon core particles and the metallic material, wherein the carbon core particles have an interplanar spacing (d002) of about 0.34 nm to about 0.40 nm at a (002) plane measured by X-ray diffraction (XRD) using a CuKα ray, and the carbon thin film has a thickness of about 1 nm to about 500 nm. | 02-16-2012 |
20120045695 | Negative electrode for a rechargeable lithium battery and rechargeable lithium battery including the same - A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same, the negative electrode including a negative active material; and a lithium ion adsorbent having a specific surface area of about 10 m | 02-23-2012 |
20120058397 | Graphene-Enhanced cathode materials for lithium batteries - A nano graphene-enhanced particulate for use as a lithium battery cathode active material, wherein the particulate is formed of a single or a plurality of graphene sheets and a plurality of fine cathode active material particles with a size smaller than 10 μm (preferably sub-micron or nano-scaled), and the graphene sheets and the particles are mutually bonded or agglomerated into an individual discrete particulate with at least a graphene sheet embracing the cathode active material particles, and wherein the particulate has an electrical conductivity no less than 10 | 03-08-2012 |
20120070745 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - Disclosed are a negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The active material includes a silicon-containing compound represented by the following Chemical Formula 1. | 03-22-2012 |
20120077090 | POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM PRIMARY CELL - The present invention provides a positive electrode active material for a lithium primary cell. The positive electrode active material can reduce the internal resistance of the positive electrode of a lithium primary cell and can maintain the load characteristics and the discharge voltage not only at high temperatures but also at low temperatures. The positive electrode active material includes a high-temperature treated fluoride produced by treating a fluoride of a carbon material at 200° C. to 400° C. | 03-29-2012 |
20120088159 | NANO-ARCHITECTURED CARBON STRUCTURES AND METHODS FOR FABRICATING SAME - In an exemplary method, a nano-architectured carbon structure is fabricated by forming a unit (e.g., a film) of a liquid carbon-containing starting material. A surface of the unit is nano-molded using a durable mold ( | 04-12-2012 |
20120107693 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY - A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The active material includes a silicon-containing compound represented by the following Chemical Formula 1 where Si exists with a concentration gradient from the surface to the center of the negative active material: | 05-03-2012 |
20120115033 | Negative Active Material for Rechargeable Lithium Battery and Rechargeable Lithium Battery Including Same - A negative active material for a rechargeable lithium battery includes a core including crystalline carbon, a metal nano particle and a MO | 05-10-2012 |
20120121987 | AMORPHOUS CARBON MATERIAL FOR NEGATIVE ELECTRODE OF LITHIUM ION SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - The amorphous carbon material for the negative electrode of a lithium ion secondary battery of the invention has a true density of 1.800-2.165 g/cm | 05-17-2012 |
20120121988 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF MANUFACTURING THE SAME AND RECHARGEABLE LITHIUM BATTERY HAVING THE SAME - Disclosed are a negative active material for a lithium secondary battery and a lithium secondary battery including same. The negative active material for a lithium secondary battery includes an amorphous carbon material, with a tap density of 0.7 to 1.5 g/cm | 05-17-2012 |
20120135312 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - Provided is a negative electrode for a non-aqueous electrolyte secondary battery, the negative electrode being unlikely to cause changes in thickness even when subjected repeated charge/discharge over a long period of time. The negative electrode includes a core material, and a negative electrode material mixture layer adhering to the core material. The negative electrode material mixture layer includes a particulate carbon material. The particulate carbon material has a breaking strength of 100 MPa or more. The particulate carbon material has a surface roughness Ra of 0.2 to 0.8 μm. The negative electrode material mixture layer has a packing density of 1.4 to 1.6 g/cm | 05-31-2012 |
20120141876 | LITHIUM ION-SULFUR BATTERY - The present invention provides a lithium ion-sulfur battery including a lithium metal used as a supply source of lithium ions, a sulfur electrode used as a positive electrode and an intercalation electrode. The intercalation electrode is (i) interposed between the lithium metal and the sulfur electrode, (ii) has a structure capable of causing an intercalation reaction, and (iii) is used as a negative electrode after the lithium ions are intercalated from the lithium metal to be charged and discharged together with the sulfur electrode. The lithium metal is used only to intercalate the lithium ions into the intercalation electrode during initial use, and the intercalation electrode, into which the lithium ions are intercalated, is used as a negative electrode during actual use. Therefore, it is possible to prevent the formation of dendrite caused when the lithium ions are used as the negative electrode, and thus the charge/discharge durability is improved. | 06-07-2012 |
20120148922 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - Provided is a negative electrode for a non-aqueous electrolyte secondary battery, the negative electrode having a high capacity and exhibits excellent output/input characteristics in charge and discharge in a low temperature environment and at a high current density. The negative electrode includes a core material, and a negative electrode material mixture layer adhering to the core material. The negative electrode material mixture layer includes a particulate carbon material. The particulate carbon material has a breaking strength of 100 MPa or more. In a diffraction pattern of the negative electrode material mixture layer measured by wide-angle X-ray diffractometry, the ratio of I(101) to I(100) satisfies 1.0 | 06-14-2012 |
20120156567 | Novel sulphur-modified monolithic porous carbon-based material process for the preparation thereof and uses thereof in the storage and release of energy - A subject-matter of the invention is a novel process for the preparation of sulphur-modified monolithic porous carbon-based materials by impregnation with a strong sulphur-based acid, the materials capable of being obtained according to this process and the use of these materials with improved supercapacitance properties to produce electrodes intended for energy storage systems. | 06-21-2012 |
20120171572 | CARBON MATERIAL FOR NEGATIVE ELECTRODE OF LITHIUM SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - To provide a negative electrode carbon material capable of suppressing capacity degradation which will occur due to repetition of a charge/discharge cycle, storage under a charged state, float charging, or the like. An artificial graphite for a negative electrode of a lithium secondary battery having a c-axis crystallite size L (112) of from 2.0 to 4.2 nm as calculated from a (112) diffraction line obtained by X-ray wide-angle diffractometry and having a half-value width Δν | 07-05-2012 |
20120177995 | Secondary Lithium Batteries Having Novel Anodes - A secondary lithium battery having an anode comprising graphene nanosheets doped with a doping element selected from the group consisting of nitrogen, boron, sulfur, phosphorous and combinations thereof. The secondary lithium battery and the anode provide capacity and other performance without degradation during long term charge and discharge cycling. | 07-12-2012 |
20120183859 | NEGATIVE ELECTRODE, ELECTRODE ASSEMBLY AND ELECTRIC STORAGE DEVICE - An object of the present invention is to provide a negative electrode, an electrode assembly and an electric storage device. The negative electrode has a negative electrode layer containing: an active material containing an amorphous carbon particle capable of occluding and releasing at least one of an alkali metal and an alkaline earth metal; and a binder, the negative electrode layer having a plurality of pores; and the ratio S | 07-19-2012 |
20120183860 | NEGATIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR PRODUCING THE NEGATIVE ELECTRODE ACTIVE MATERIAL, AND LITHIUM ION SECONDARY BATTERY USING THE NEGATIVE ELECTRODE ACTIVE MATERIAL - Disclosed is a negative electrode active material which has a high capacity and good cyclability. The negative electrode active material comprises nanosize carbon particles and nanosize tin dioxide particles that are supported in a high-dispersion state on the nanosize carbon particles. The negative electrode active material has a high discharge capacity because of the reversible progress of a conversion reaction of tin dioxide (SnO | 07-19-2012 |
20120208088 | HIGH SURFACE AREA NANO-STRUCTURED GRAPHENE COMPOSITES AND CAPACITIVE DEVICES INCORPORATING THE SAME - A carbon composite material, including a plurality of spaced graphene sheets, each respective sheet having opposed generally planar surfaces, and a plurality of functionalized carbonaceous particles. At least some functionalized carbonaceous particles are disposed between any two adjacent graphene sheets, and each respective at least some functionalized carbonaceous particle is attached to both respective any two adjacent graphene sheets. Each respective graphene sheet comprises at least one layer of graphene and at least portions of respective any two adjacent graphene sheets are oriented substantially parallel with one another. | 08-16-2012 |
20120208089 | CARBON MATERIAL FOR LITHIUM ION SECONDARY CELL, NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY CELL AND LITHIUM ION SECONDARY CELL - Disclosed is a carbon material for lithium ion secondary cell having a positron lifetime of 370 picoseconds or longer, and 480 picoseconds or shorter, when measured by positron annihilation spectroscopy under conditions (A) to (E) below:
| 08-16-2012 |
20120214070 | ELECTRODE FOR A LITHIUM BATTERY AND LITHIUM BATTERY - An electrode for a lithium battery, which electrode includes an electrode active material which can charge and discharge lithium ions (A), a carbonaceous conductive additive (B) and a binder (C). The carbonaceous conductive additive contains carbon fiber, the carbon fiber including a mixture of two kinds of carbon fibers having different diameter distributions on a number basis; and the fiber diameter distribution of the carbon fiber in the electrode has one or more maximum values at 5-40 nm and at 50-300 nm, respectively. Also disclosed is a lithium battery using the electrode. The electrode enables production of a lithium battery having a reduced discharge capacity decline. | 08-23-2012 |
20120219863 | CARBON PARTICLES FOR NEGATIVE ELECTRODE OF LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY - Disclosed are carbon particles for a negative electrode of a lithium ion secondary battery, the carbon particles having a pore volume of pores having a size of 2×10 to 2×10 | 08-30-2012 |
20120237830 | NON-THERMOFUSIBLE PHENOL RESIN POWDER, METHOD FOR PRODUCING THE SAME, THERMOSETTING RESIN COMPOSITION, SEALING MATERIAL FOR SEMICONDUCTOR, AND ADHESIVE FOR SEMICONDUCTOR - Disclosed is a non-thermofusible phenol resin powder having an average particle diameter of not more than 20 μm and a single particle ratio of not less than 0.7. This non-thermofusible phenol resin powder preferably has a chlorine content of not more than 500 ppm. This non-thermofusible phenol resin powder is useful as an organic filler for sealing materials for semiconductors and adhesives for semiconductors. The non-thermofusible phenol resin powder is also useful as a precursor of functional carbon materials such as a molecular sieve carbon and a carbon electrode material. | 09-20-2012 |
20120237831 | TIN NANOPARTICLES AND METHODOLOGY FOR MAKING SAME - A method of preparing tin (Sn) nanoparticles based on a bottom-up approach is provided. The method includes combining a first solution comprising Sn ions with a second solution comprising a reducing agent. After the combination, the Sn ions and the reducing agent undergo a reaction in which at least some of the Sn ions are reduced to Sn nanoparticles. The first solution comprises a tin salt dissolved in a solvent; the second solution comprises an alkali metal and naphthalene dissolved in a solvent; and the combined solution further comprises a capping agent that moderates a growth of aggregates of the Sn nanoparticles. | 09-20-2012 |
20120251888 | Mixed Carbon Material and Negative Electrode for Nonaqueous Secondary Battery - The present invention provides a mixed carbon material which comprises carbon material A and carbon material B and which is a carbon material suitable for a negative electrode material which can provide a nonaqueous secondary battery having a low irreversible capacity and having a negative electrode with a high capacity and high charge acceptance. Carbon material A and carbon material B both have cores made of graphite powder and a surface carbon material in the form of at least one of amorphous carbon and turbostratic carbon adhered to or coated on at least a portion of the surface of the graphite powder. The compressed density is 1.80-1.90 g/cm | 10-04-2012 |
20120251889 | PARTICULATE POROUS CARBON MATERIAL AND USE THEREOF IN LITHIUM CELLS - The present invention relates to a novel particulate porous carbon material containing a carbon phase and at least one pore phase, and to the use of such materials in lithium cells, especially lithium-sulfur cells. The carbon phase forms, with the pore phase, essentially unordered co-continuous phase domains, such that the distance between adjacent domains of the pore phase is not more than 50 nm. The invention also relates to a process for producing such carbon materials and to composite materials comprising elemental sulfur and at least one inventive particulate porous carbon material. | 10-04-2012 |
20120258371 | METHOD FOR MANUFACTURING NEGATIVE ELECTRODE ACTIVE MATERIAL FOR USE IN NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE MATERIAL FOR USE IN NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides a method for manufacturing a carbon-coated negative electrode active material for use in a non-aqueous electrolyte secondary battery, wherein a negative electrode active raw material including at least one of silicon oxide powder and silicon powder is coated with carbon by a catalytic CVD method. The present invention also provides a negative electrode material for use in a non-aqueous electrolyte secondary battery and a non-aqueous electrolyte secondary battery using the negative electrode active material. As a result, there is provided a method for manufacturing a negative electrode active material for use in a non-aqueous electrolyte secondary battery in which high battery capacity given by the silicon-based active material is maintained and a volume expansion and a break in the active material are suppressed. | 10-11-2012 |
20120264020 | METHOD OF DEPOSITING SILICON ON CARBON NANOMATERIALS - A method of depositing silicon on carbon nanomaterials such as vapor grown carbon nanofibers, nanomats, or nanofiber powder is provided. The method includes flowing a silicon-containing precursor gas in contact with the carbon nanomaterial such that silicon is deposited on the exterior surface and within the hollow core of the carbon nanomaterials. A protective carbon coating may be deposited on the silicon-coated nanomaterials. The resulting nanocomposite materials may be used as anodes in lithium ion batteries. | 10-18-2012 |
20120282527 | COMPOSITE MATERIALS FOR BATTERY APPLICATIONS - A process for producing nanocomposite materials for use in batteries includes electroactive materials are incorporated within a nanosheet host material. The process may include treatment at high temperatures and doping to obtain desirable properties. | 11-08-2012 |
20120288768 | NEGATIVE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, AND LITHIUM BATTERY INCLUDING THE SAME - Provided are a negative active material, a method of preparing the same, and a lithium battery including the negative active material, wherein the negative active material includes a carbonaceous material that has a peak with respect to a surface (002) at a Bragg angle 2θ of 26.4°±0.1° in an X-ray diffraction spectrum, has a full width at half maximum of the peak with respect to the surface (002) of about 0.2° to about 0.6°, has an interlayer spacing (d | 11-15-2012 |
20120308894 | POWER STORAGE DEVICE AND METHOD OF MANUFACTURING THE SAME - A negative electrode and a power storage device are provided, which have one of an alloy-based particle and an alloy-based whisker and a carbon film including 1 to 50 graphene layers. A surface of the alloy-based particle or the alloy-based whisker is covered with the carbon film. In addition, a method of manufacturing a negative electrode and a method of manufacturing a power storage device are provided, which have the step of mixing an alloy-based particle or an alloy-based whisker with graphene oxide, and the step of heating the mixture in a vacuum or in a reducing atmosphere. | 12-06-2012 |
20120321960 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING THE SAME, AND NEGATIVE ELECTRODE AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - Provided are A carbon-based material having a FWHM ranging from 2.5° to 6.0° at 2θ ranging from 20° to 30° in a XRD pattern using CuKα ray and a peak area ratio ranging from 1.0 to 100.0 between FWHM at 2θ ranging from 20° to 30° and FWHM at 2θ ranging from 50° to 53°, and a method of manufacturing the carbon-based material, and a negative electrode and a rechargeable lithium battery including the same. | 12-20-2012 |
20120321961 | CARBON NANOTUBE ARRAY BONDING - Material compositions are provided that may comprise, for example, a vertically aligned carbon nanotube (VACNT) array, a conductive layer, and a carbon interlayer coupling the VACNT array to the conductive layer. Methods of manufacturing are provided. Such methods may comprise, for example, providing a VACNT array, providing a conductive layer, and bonding the VACNT array to the conductive layer via a carbon interlayer. | 12-20-2012 |
20120328952 | ELECTRODES, LITHIUM-ION BATTERIES, AND METHODS OF MAKING AND USING SAME - Described herein are improved composite anodes and lithium-ion batteries made therefrom. Further described are methods of making and using the improved anodes and batteries. In general, the anodes include a porous composite having a plurality of agglomerated nanocomposites. At least one of the plurality of agglomerated nanocomposites is formed from a dendritic particle, which is a three-dimensional, randomly-ordered assembly of nanoparticles of an electrically conducting material and a plurality of discrete non-porous nanoparticles of a non-carbon Group 4A element or mixture thereof disposed on a surface of the dendritic particle. At least one nanocomposite of the plurality of agglomerated nanocomposites has at least a portion of its dendritic particle in electrical communication with at least a portion of a dendritic particle of an adjacent nanocomposite in the plurality of agglomerated nanocomposites. | 12-27-2012 |
20120328953 | GRAPHENE, POWER STORAGE DEVICE, AND ELECTRIC APPLIANCE - Graphene which is permeable to lithium ions and can be used for electric appliances is provided. A carbocyclic ring including nine or more ring members is provided in graphene. The maximum potential energy of the carbocyclic ring including nine or more ring members to a lithium ion is substantially 0 eV. Therefore, the carbocyclic ring including nine or more ring members can function as a hole through which lithium ions pass. When a surface of an electrode or an active material is coated with such graphene, reaction of the electrode or the active material with an electrolyte can be suppressed without interference with the movement of lithium ions. | 12-27-2012 |
20120328954 | NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY USING THE NEGATIVE ELECTRODE MATERIAL, AND LITHIUM ION SECONDARY BATTERY - Disclosed are: a negative electrode material for a lithium ion secondary battery, which enables the production of one having a smaller irreversible capacity. That is a negative electrode material for a lithium ion secondary battery having a carbon layer formed on a surface of a carbon material as a core, wherein (A) a carbon (002) plane has a plane distance of 3.40 to 3.70 Å (by an XRD measurement), (B) a content ratio of the carbon layer to the carbon material is 0.005 to 0.1, (C) a specific surface area is 0.5 to 10.0 m | 12-27-2012 |
20130017449 | POSITIVE-ELECTRODE ACTIVE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY AND LITHIUM-ION SECONDARY BATTERYAANM Yasuda; NaotoAACI Kariya-shiAACO JPAAGP Yasuda; Naoto Kariya-shi JPAANM Murase; HitotoshiAACI Kariya-shiAACO JPAAGP Murase; Hitotoshi Kariya-shi JPAANM Isomura; RyotaAACI Kariya-shiAACO JPAAGP Isomura; Ryota Kariya-shi JPAANM Abe; ToruAACI Kariya-shiAACO JPAAGP Abe; Toru Kariya-shi JP - The present invention is characterized in that it is a positive-electrode active material for lithium-ion secondary battery, the positive-electrode active material being capable of absorbing and releasing lithium; it includes the following at least: a first compound exhibiting an irreversible capacity; and a second compound being capable of absorbing more lithium than an amount of lithium that has been released at the time of first-round charging; and it exhibits an irreversible capacity decreasing as a whole of active material. | 01-17-2013 |
20130040203 | ANODE MATERIAL - The present disclosure relates to anode materials having high surface areas and improved cycle performance made by surface treatments of spheroidized graphite powders. The surface treatments provide a high surface area protective coating over the spheroidized graphite powder. The anodes made according to the disclosed embodiments have improved cycle life and long term high temperature storage performance. In the disclosed embodiments, a spheroidized graphite powder is coated with a high surface area protective coating. The high surface area protective coating improves the performance and durability of an anode made from disclosed 200 material. The high surface area protective coating can include polymers, metal compounds and/or hard carbon. Further, in some embodiments, a protective coating, that may or may not have a high surface area but does have increased durability, can be formed by heat treating the spheroidized graphite in oxidizing or inert atmospheres. | 02-14-2013 |
20130045424 | PLATE-LIKE PARTICLE FOR CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, CATHODE ACTIVE MATERIAL FILM FOR LITHIUM SECONDARY BATTERY, METHODS FOR MANUFACTURING THE PARTICLE AND FILM, METHOD FOR MANUFACTURING CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY - An object of the present invention is to provide a lithium secondary battery which has improved capacity, durability, and rate characteristic as compared with conventional lithium secondary batteries. A plate-like particle or a film for a lithium secondary battery cathode active material has a layered rock salt structure. The (003) plane is oriented in a direction intersecting the direction of the plate surface of the particle or film. | 02-21-2013 |
20130052536 | SILICON-CARBONACEOUS ENCAPSULATED MATERIALS - A process includes preparing a solution including a silicon precursor or mixture of silicon precursors and a monomer or mixture of monomers; polymerizing the monomer to form a polymer-silicon precursor matrix; and pyrolyzing the polymer-silicon precursor matrix to form an electrochemically active carbon-coated silicon material. | 02-28-2013 |
20130059205 | METHOD FOR MANUFACTURING ELECTRODE ACTIVE MATERIAL - The method for manufacturing a particulate electrode active material provided by the present invention uses a carbon source supply material prepared by dissolving a carbon source ( | 03-07-2013 |
20130059206 | MATERIAL FOR NEGATIVE ELECTRODES, AND NEGATIVE ELECTRODES AND BATTERIES COMPRISING THIS MATERIAL, AND PROCESS FOR PRODUCING THE MATERIAL - A material for a battery or an accumulator, especially for a negative electrode of an accumulator, for example, a lithium ion secondary battery, the use of such a material, an electrode that includes such a material, a battery having such an electrode, and a process for producing such a material. The material includes carbon, an alloy and/or a mixture of silicon with at least one element of main group 1 of the Periodic Table of the Elements excluding lithium, and optionally at least one further metallic element and production-related impurities, the elements being distributed within a silicon phase in the case of a mixture, and a binder which binds carbon and the alloy and/or the mixture to give a solid material. | 03-07-2013 |
20130059207 | NEGATIVE ELECTRODE ACTIVE MATERIAL - As a negative electrode active material that enables steady production of batteries with excellent low-temperature performance, provided is a composite carbon comprising a low-crystalline carbon material at least partially on surfaces of particles of a high-crystalline carbonaceous substance. The negative electrode active material has a tapped density of 0.9 g/cm | 03-07-2013 |
20130065131 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY COMPRISING SAME - A negative active material for a rechargeable lithium battery includes: a crystalline carbon core including pores; an amorphous carbon shell positioned on the core surface; metal nanoparticles dispersed inside the pores; and amorphous carbon inside the pores, wherein a first particle diameter difference (D50−D10) of the nanoparticles is from about 70 to about 150 nm and the second particle diameter difference (D90−D50) of the nanoparticles is from about 440 to about 520 nm. | 03-14-2013 |
20130071750 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING THE SAME AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - A negative active material for a rechargeable lithium battery includes a core including a SiO | 03-21-2013 |
20130071751 | POWER STORAGE DEVICE - A power storage device in which charge capacity and discharge capacity are high and deterioration in battery characteristics due to charge/discharge is small is provided. A power storage device in which charge capacity and discharge capacity are high and output characteristics are excellent is provided. A power storage device in which charge capacity and discharge capacity are high and cycle characteristics are excellent is provided. A power storage device includes a negative electrode. The negative electrode includes a current collector, an active material including a plurality of protrusions protruding from the current collector and an outer shell in contact with and attached to surfaces of the plurality of protrusions, and graphene in contact with and attached to the outer shell. Axes of the plurality of protrusions are oriented in the same direction. A common portion may be provided between the current collector and the plurality of protrusions. | 03-21-2013 |
20130071752 | NEGATIVE-ELECTRODE MATERIAL POWDER FOR LITHIUM-ION SECONDARY BATTERY AND METHOD FOR PRODUCING SAME - Provided is a negative-electrode material powder for lithium-ion secondary battery including a silicon-rich layer on the surface of a lower silicon oxide powder, and a negative-electrode material powder for said battery comprising a silicon oxide powder, characterized by satisfying c/d<1, where c is the molar ratio of oxygen to silicon on the surface of the silicon oxide powder and d is that for the entire part thereof. It preferably satisfies one of c<1 and 0.803-21-2013 | |
20130084501 | ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - An electrode material for lithium secondary battery comprises a nanoheterostructure which contains a lithium-ion conductor and an electrode active substance of which one inorganic component is a matrix, and of which the other inorganic component is three-dimensionally and periodically arranged in the matrix, and has a three-dimensional periodic structure whose average value of one unit length of a repeated structure is 1 nm to 100 nm. | 04-04-2013 |
20130089790 | Carbon Electrodes - A self-supporting carbon electrode can include, or consist essentially of, nanostructured carbon, for example, oxygen-functionalized nanostructured carbon. | 04-11-2013 |
20130089791 | ANODE ACTIVE MATERIAL AND SECONDARY BATTERY COMPRISING THE SAME - Disclosed are an anode active material for secondary batteries, capable of intercalating and deintercalating ions, comprising a core comprising a crystalline carbon-based material and a composite coating layer comprising one or more materials selected from the group consisting of low crystalline carbon and amorphous carbon, and a metal and/or a non-metal capable of intercalating and deintercalating ions, wherein the composite coating layer comprises a matrix comprising one component selected from one or more materials selected from the group consisting of low crystalline carbon and amorphous carbon and a metal and/or a non-metal capable of intercalating and deintercalating ions, and a filler comprising the other component, incorporated in the matrix, and a secondary battery comprising the anode active material. | 04-11-2013 |
20130108930 | PERFORMANCE ENHANCEMENT ADDITIVES FOR DISORDERED CARBON ANODES | 05-02-2013 |
20130115517 | NEGATIVE ACTIVE MATERIAL, METHOD OF PREPARING THE NEGATIVE ACTIVE MATERIAL, ELECTRODE INCLUDING THE NEGATIVE ACTIVE MATERIAL, AND LITHIUM BATTERY INCLUDING THE ELECTRODE - A negative active material including: a composite including a matrix comprising silicon oxide, silicon carbide, and carbon and silicon particles dispersed in the matrix; and a carbon coating film formed on a surface of the composite, wherein an intensity ratio of a SiC peak to a Si peak in an X-ray diffraction spectrum is 1 or more, a method of preparing the negative active material, a negative electrode including the negative active material, and a lithium battery including the electrode. | 05-09-2013 |
20130115518 | STOCK OIL COMPOSITION FOR CARBONACEOUS MATERIAL FOR NEGATIVE ELECTRODE OF LITHIUM-ION SECONDARY BATTERY - Provided is a stock oil composition for a carbonaceous material for a negative electrode of a lithium-ion secondary battery which composition is useful for achieving excellent high-speed charge and discharge characteristics. The stock oil composition for a carbonaceous material for a negative electrode of a lithium-ion secondary battery uses a bottom oil of residue fluid catalytic cracking apparatus as a raw material. The stock oil composition comprises, of a saturated component, an aromatic component, a resin component and an asphaltene component detectable by development of the stock oil composition using thin-layer chromatography, the saturated component ranging from 30 to 50% by weight and the aromatic component ranging from 50 to 70% by weight; and has an average molecular weight of from 400 to 600. | 05-09-2013 |
20130122374 | LITHIUM-ION BATTERY ELECTRODES WITH SHAPE-MEMORY-ALLOY CURRENT COLLECTING SUBSTRATES - Lithium-ion battery electrode constructions use an array of nanowires (or of other long thin shapes) of active electrode material anchored at one end to a surface of a metal current collector sheet in an electrode assembly or construction. This form of active electrode material permits good contact with a liquid lithium-ion containing electrolyte that infiltrates the closely-spaced thin shapes. Stresses arising from volume changes in the long shapes with lithiation and de-lithiation of the active material is mitigated by strategic placement of shape memory apply forms between attachment surfaces of the active electrode material and other members of the electrode assembly. | 05-16-2013 |
20130130115 | COMPOSITE NEGATIVE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - A composite negative active material including metal nanostructures disposed on one or more of a surface and inner pores of a porous carbon-based material, a method of preparing the material, and a lithium secondary battery including the material. | 05-23-2013 |
20130130116 | METAL-SULFUR ELECTRODE FOR LITHIUM-SULFUR BATTERY AND PREPARING METHOD THEREOF - Disclosed is a metal-sulfur electrode for a lithium-sulfur battery and a method for preparing the same. More particularly, a metal-sulfur electrode for a lithium-sulfur battery is prepared by coating a slurry mixture including sulfur, a conductive material and a binder as an electrode active material on a metal electrode and drying the same while applying an electric field such that the conductive material is aligned adequately so as to provide maximize efficiency during repeated charging and discharging when used in the anode of the lithium-sulfur battery. | 05-23-2013 |
20130130117 | Modified Natural Graphite Particle and Method for Producing the Same - Modified natural graphite particles intended for forming a negative electrode material for a nonaqueous electrolyte secondary battery are characterized by having a circularity of at least 0.93 and at most 1.0 and a surface roughness of at most 1.5% with respect to the length of the particles. These modified natural graphite particles are obtained by a manufacturing method including a step of applying an impact force to natural graphite particles for pulverization and spheroidization to obtain intermediate particles having a circularity of at least 0.93 and at most 1.0, and a step of carrying out surface smoothing of the resulting intermediate particles by mechanical grinding treatment to obtain the modified natural graphite particles. | 05-23-2013 |
20130130118 | ANODE FOR SECONDARY BATTERY - Disclosed is an anode for secondary batteries comprising a combination of an anode active material having a relatively low charge/discharge voltage and a relatively low hardness (A) and an anode active material having a relatively high charge/discharge voltage and a relatively high hardness (B), wherein the anode active material (A) is surface-coated with carbon having a high hardness or a composite thereof, and a particle size of the anode active material (B) is smaller than a size of a space formed by the anode active materials (A) arranged in a four-coordination. The anode provides an electrode that prevents lithium precipitation caused by overvoltage, improves ionic conductivity as well as electric conductivity and exhibits superior capacity. | 05-23-2013 |
20130130119 | COPPER-COVERED STEEL FOIL, NEGATIVE ELECTRODE COLLECTOR AND ITS PRODUCTION METHOD, AND BATTERY - A negative electrode collector using a copper-covered steel foil for carrying a negative electrode active material for lithium ion secondary batteries has a steel sheet as the core material thereof and has, on both surfaces thereof, a copper covering layer having a mean thickness t | 05-23-2013 |
20130130120 | GAS PHASE DEPOSITION OF BATTERY SEPARATORS - In certain embodiments, a battery component comprises an electrode and a separator deposited on a surface of the electrode is provided. The separator comprises a porous poly(para-xylylene) film. In some embodiments, the electrode can include at least one cavity or protrusion, and the separator layer can be gas phase deposited directly on the electrode. In certain embodiments, methods of making a battery component are also provided. | 05-23-2013 |
20130130121 | LITHIUM ION SECONDARY BATTERY - Provided is a lithium-ion secondary battery having an excellent initial capacity as well as a good capacity retention rate. The battery comprises a positive electrode comprising a positive electrode active material, a negative electrode comprising a negative electrode active material, and a non-aqueous liquid electrolyte. The negative electrode active material comprises a graphitic material that satisfies each of the following properties: (a) in its Raman spectrum obtained by Raman scattering analysis using an exciting light at a wavelength of 532 nm, having a ratio of its D-peak intensity I | 05-23-2013 |
20130136994 | MODIFIED BATTERY ANODE WITH CARBON NANOTUBES - An improved anode material for a lithium ion battery is disclosed. The improved anode material can improve both electric conductivity and the mechanical resilience of the anode, thus drastically increasing the lifetime of lithium ion batteries. | 05-30-2013 |
20130136995 | NEGATIVE ACTIVE MATERIAL AND LITHIUM BATTERY INCLUDING THE NEGATIVE ACTIVE MATERIAL - A negative active material and a lithium battery including the negative active material. The negative active material includes a carbonaceous substrate with a plurality of recessed portions at its surface; and a silicon-based nanowire placed in each of the recessed portions. The negative active material provides the silicon-based nanowires with separate places to control volumetric expansion of the silicon-based nanowires, and thus, a lithium battery including the negative active material has improved efficiency and lifetime. | 05-30-2013 |
20130136996 | ASYMMETRIC HYBRID LITHIUM SECONDARY BATTERY HAVING BUNDLE TYPE SILICON NANO-ROD - Disclosed are a metallic nano-structure material in which an energy storage capacity based on electrochemical reaction with lithium is improved by 10 times or more compared to a conventional graphite material and power characteristics are excellent, an electrode composed of the metallic nano-structure material, and a lithium ion asymmetric secondary battery including the electrode as an anode. When using the electrode for the lithium ion asymmetric secondary battery, energy larger than with the graphite material can be stored with very thin thickness due to the high-capacity feature of the metallic material and the high-power feature can be achieved by the nano structure, such that energy density can be innovatively improved in the same weight condition when compared to a conventional lithium ion capacitor, and the lithium ion asymmetric secondary battery including the electrode can be used for renewable energy storage, ubiquitous power supply, heavy machinery, vehicle power source, etc. | 05-30-2013 |
20130143127 | ANODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, ANODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY - An anode material for a lithium ion secondary battery that includes a carbon material having an average interlayer spacing d | 06-06-2013 |
20130157139 | ANODE ACTIVE MATERIAL, NON-AQUEOUS LITHIUM SECONDARY BATTERY INCLUDING THE SAME, AND MANUFACTURING METHOD THEREOF - The disclosure relates to an anode active material, a non-aqueous lithium secondary battery, and a manufacturing method thereof. The anode active material of this disclosure comprises a carbon-based material, and a coating film formed on the surface of the carbon-based material by performing heat treatment using an ammonia-based compound. The coating film may be formed on the surface of the carbon-based material through a thermal decomposition method using 10% or less by weight of the ammonia-based compound with respect to the carbon-based material. Since the surface of the carbon-based material is thermally treated using the ammonia-based compound, side reaction of the carbon-based material with an electrolyte at the surface thereof can be suppressed and structural stability can be enhanced, thereby improving battery lifespan and high-rate capability of a non-aqueous lithium secondary battery. | 06-20-2013 |
20130164625 | SULFUR-CARBON COMPOSITE CATHODES FOR RECHARGEABLE LITHIUM-SULFUR BATTERIES AND METHODS OF MAKING THE SAME - This disclosure relates to a method of synthesizing a sulfur-carbon composite comprising forming an aqueous solution of a sulfur-based ion and carbon source, adding an acid to the aqueous solution such that the sulfur-based ion nucleates as sulfur upon the surface of the carbon source; and forming an electrically conductive network from the carbon source. The sulfur-carbon composite includes the electrically conductive network with nucleated sulfur. It also relates to a sulfur-carbon composite comprising a carbon-based material, configured such that the carbon-based material creates an electrically conductive network and a plurality of sulfur granules in electrical communication with the electrically conductive network, and configured such that the sulfur granules are reversibly reactive with alkali metal. It further relates to batteries comprising a cathode comprising such a carbon-based material along with an anode and an electrolyte. | 06-27-2013 |
20130164626 | BINDER-FREE SULFUR-CARBON NANOTUBE COMPOSITE CATHODES FOR RECHARGEABLE LITHIUM-SULFUR BATTERIES AND METHODS OF MAKING THE SAME - The present disclosure includes a sulfur-carbon nanotube composite comprising a sheet of carbon nanotubes and sulfur nucleated upon the carbon nanotubes, and methods for synthesizing the same. In some embodiments, the sulfur-carbon composite may further be binder-free and include a sheet of carbon nanotubes, rendering a binder and a current collector unnecessary. In other embodiments of the present disclosure, a cathode comprising the sulfur-carbon nanotube composite is disclosed. In additional embodiments of the present disclosure, batteries may include the cathodes described herein. Those batteries may achieve high rate capabilities. | 06-27-2013 |
20130177813 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING THE SAME AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - A negative active material for a rechargeable lithium battery includes a SiO | 07-11-2013 |
20130177814 | Energy Storage Devices - A novel hybrid lithium-ion anode material based on coaxially coated Si shells on vertically aligned carbon nanofiber (CNF) arrays. The unique cup-stacking graphitic microstructure makes the bare vertically aligned CNF array an effective Li | 07-11-2013 |
20130177815 | NEGATIVE ACTIVE MATERIAL, LITHIUM SECONDARY BATTERY COMPRISING THE NEGATIVE ACTIVE MATERIAL AND MANUFACTURING METHOD THEREOF - Disclosed are an anode active material, a non-aqueous lithium secondary battery, and a preparation method thereof. The surface of a carbonaceous material is modified without using an electrolyte additive, and the reactivity and structural stability of the surface is improved, thereby obtaining long lifetime characteristics without deteriorating charge/discharge efficiency and rate characteristics when applied as an anode active material of a non-aqueous lithium secondary battery. The anode active material comprises a carbonaceous material, and a coating layer formed on the surface of the carbonaceous material through hetero atom substitution, wherein the hetero atom can be phosphorus (P) or sulfur (S). A side reaction with an electrolyte on the surface of the carbonaceous material is inhibited and the structural stability of the surface is enhanced by forming a coating layer on the surface of the carbonaceous material with a hetero atom such as phosphorus (P) or sulfur (S). | 07-11-2013 |
20130189585 | NEGATIVE ACTIVE MATERIAL FOR A RECHARGEABLE LITHIUM BATTERY, A METHOD OF PREPARING THE SAME, AND A RECHARGEABLE LITHIUM BATTERY COMPRISING THE SAME - Negative active materials for rechargeable lithium batteries, methods of manufacturing the negative active materials, and rechargeable lithium batteries including the negative active materials are provided. One negative active material includes an active metal core and a crack inhibiting layer formed on the core. The crack inhibiting layer includes a carbon-based material. | 07-25-2013 |
20130209891 | POROUS CARBON PRODUCT, METHOD FOR THE PRODUCTION THEREOF, AND USE OF THE SAME - For use as electrode material for a lithium battery, porous templates are impregnated with a carbon feedstock that can be graphitized. This frequently results in only a low thickness of the deposited, graphite-like layer, such that generally several such infiltration and carbonation processes must be carried out consecutively. In order to provide a cost-effective product which is made of porous carbon and has high porosity and a low surface, according to the invention a method comprises the following method steps: (a) preparing a porous carbon structure having a large specific surface, (b) infiltrating the carbon structure with a precursor substance for carbon that can be graphitized, (c) carbonizing the precursor substance to form the carbon product having a low specific surface, wherein preparing the carbon structure according to method step (a) comprises the following: (I) preparing a template containing pores, (II) infiltrating the pores of the template with a solution that contains a precursor of carbon that cannot be graphitized, (III) carbonizing the precursor forming the carbon structure having the first specific surface, and (IV) removing the template. | 08-15-2013 |
20130224598 | CARBON MATERIAL FOR NONAQUEOUS-ELECTROLYTE SECONDARY-BATTERY NEGATIVE ELECTRODE AND PROCESS FOR PRODUCING THE SAME, NEGATIVE ELECTRODE INCLUDING THE SAME FOR NONAQUEOUS SECONDARY BATTERY, AND NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY - A carbon material for nonaqueous-electrolyte secondary-battery negative electrode is provided, which satisfies the followings (1) and (2): | 08-29-2013 |
20130224599 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - Disclosed are a method of preparing a negative active material for a rechargeable lithium battery that includes: preparing a powder including a material being capable of doping and dedoping lithium; coating the powder including the material being capable of doping and dedoping lithium with metal particles; and etching the powder including the material being capable of doping and dedoping lithium and coated with the metal particles, a negative active material for a rechargeable lithium battery prepared in this method, and a rechargeable lithium battery including the negative active material. | 08-29-2013 |
20130224600 | NEGATIVE ELECTRODE MATERIAL POWDER FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY AND NEGATIVE ELECTRODE FOR CAPACITOR, AND LITHIUM ION SECONDARY BATTERY AND CAPACITOR - In a lithium ion secondary battery using a negative electrode material powder including a lower silicon oxide powder as a negative electrode material, a charge electric potential at 0.45-1.0 V relative to a Li reference upon initial charging results in a lithium ion secondary battery having a large discharge capacity with excellent cycle characteristics, which can be durable in practical use. On this occasion, the charge electric potential being 0.45-1.0 V relative to the Li reference upon initial charging means that an electric potential plateau caused by the generation of Li-silicate is observed, and the Li-silicate is uniformly generated in the negative electrode material, and this results in excellent cycle characteristics. The negative electrode material powder can have an electrically conductive carbon film on the surface with a ratio of the carbon film to the surface of the powder to be 0.2-10 mass %. | 08-29-2013 |
20130244116 | ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to an electrode for a non-aqueous electrolyte secondary battery, a non-aqueous electrolyte secondary battery using the electrode, and a method for manufacturing the non-aqueous electrolyte secondary battery. The electrode for a non-aqueous electrolyte secondary battery includes a material mixture layer containing an active material and a porous insulating layer. The insulating layer is formed on the material mixture layer. The insulating layer contains a resin having a cross-linked structure and inorganic particles. A mixed layer that includes components of the insulating layer and components of the material mixture layer is provided at the interface between the insulating layer and the material mixture layer. | 09-19-2013 |
20130244117 | AMORPHOUS CARBON MATERIAL FOR NEGATIVE ELECTRODE OF LITHIUM ION SECONDARY BATTERY AND NONAQUEOUS SECONDARY BATTERY COMPRISING SAME - Provided is an amorphous carbon material for a negative electrode of a lithium ion secondary battery. The amorphous carbon material comprises a size of a crystallite Lc(002) in c-axis direction ranging from 2.0 to 8.0 nm, the size being calculated from a (002) diffraction line of the amorphous carbon material measured by powder X-ray diffractometry; a carbon-derived spectrum appearing in a range from 3,200 to 3,400 gauss (G) in an electron spin resonance measured using X band; a relative signal intensity ratio (I | 09-19-2013 |
20130244118 | NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY - The present invention provides a negative electrode active material which can prevent reduction in battery capacity by suppressing reaction of an electrolyte solution at the surface of the negative electrode active material as well as can reduce resistance resulting from the formation of a film. A negative electrode active material | 09-19-2013 |
20130252110 | NEGATIVE ACTIVE MATERIAL AND LITHIUM BATTERY CONTAINING THE SAME - A negative active material includes a silicon-based particle and a crystalline carbonaceous material, the crystalline carbonaceous material including a graphite particle and a carbonaceous nano-sheet. | 09-26-2013 |
20130252111 | LITHIUM ION SECONDARY BATTERY AND METHOD FOR MANUFACTURING LITHIUM ION SECONDARY BATTERY - A lithium ion secondary battery involves a negative electrode sheet including a negative current collector and a negative active material layer that contains negative active material particles including first particles and second particles. In the negative active material layer, the ratio of the first particles to the total negative active material particles in a part on the current collector side in the layer thickness direction of the negative active material layer is higher than the ratio of the first particles to the total negative active material particles in the whole negative active material layer and the ratio of the second particles to the total negative active material particles in a part on an outer surface side of the negative active material layer in the layer thickness direction is higher than the ratio of the second particles to the total negative active material particles in the whole negative active material layer. | 09-26-2013 |
20130260254 | LITHIUM ION CELL HAVING IMPROVED AGEING BEHAVIOR - A formed, secondary electrochemical cell includes at least one positive electrode containing a metal compound capable of reversibly incorporating and releasing lithium in the form of ions, at least one negative electrode containing a carbon compound capable of reversibly incurporating or releasing lithium in the form of ions, and/or a metal and/or semi-metal which can be alloyed with lithium, an electrolyte via which lithium ions can migrate between the at least one positive electrode and the at least one negative electrode, and mobile lithium available for incorporation or releasing processes in the electrodes, wherein capacity of the at least one negative electrode for taking up lithium is higher than that of the at least one positive electrode, the at least one negative electrode has a higher capacity than required for taking up the entire mobile lithium contained in the cell, and the mobile lithium is contained in the cell in an amount which exceeds the capacity of the at least one positive electrode for taking up lithium. | 10-03-2013 |
20130266869 | GRAPHENE AND POWER STORAGE DEVICE, AND MANUFACTURING METHOD THEREOF - The formation method of graphene includes the steps of forming a layer including graphene oxide over a first conductive layer; and supplying a potential at which the reduction reaction of the graphene oxide occurs to the first conductive layer in an electrolyte where the first conductive layer as a working electrode and a second conductive layer with a as a counter electrode are immersed. A manufacturing method of a power storage device including at least a positive electrode, a negative electrode, an electrolyte, and a separator includes a step of forming graphene for an active material layer of one of or both the positive electrode and the negative electrode by the formation method. | 10-10-2013 |
20130266870 | ANODE ACTIVE MATERIAL AND SECONDARY BATTERY COMPRISING THE SAME - Disclosed are an anode active material for secondary batteries, capable of intercalating and deintercalating ions, the anode active material including a core including a crystalline carbon-based material, and a composite coating layer including one or more materials selected from the group consisting of low crystalline carbon and amorphous carbon, and silicon oxide capable of intercalating and deintercalating ions, wherein the composite coating layer includes a matrix comprising one component selected from (a) the one or more materials selected from the group consisting of low crystalline carbon and amorphous carbon and (b) the silicon oxide capable of intercalating and deintercalating ions, and a filler including the other component, incorporated in the matrix, and a secondary battery including the anode active material. | 10-10-2013 |
20130273432 | GRAPHITE MATERIAL FOR A LITHIUM ION SECONDARY CELL NEGATIVE ELECTRODE, METHOD OF MANUFACTURING SAME, AND LITHIUM ION SECONDARY CELL - A graphite material for a negative electrode of a lithium ion secondary cell is capable of suppressing capacity degradation caused by the repetition of charging and discharging cycles, storage in a charged state, floating charging and the like. A graphite material for a negative electrode of a lithium ion secondary cell, in which Lc (112), which is a crystallite size in a c-axis direction calculated from a (112) diffraction line measured using powder X-ray diffraction method, is within 4.0 nm to 30 nm, a carbon-derived spectrum appearing in electron spin resonance spectroscopy, which is measured using an X band, is in a range of 3200 gauss (G) to 3400 gauss (G), a relative signal intensity ratio (I | 10-17-2013 |
20130273433 | SILICON/CARBON COMPOSITE MATERIAL, METHOD FOR THE SYNTHESIS THEREOF AND USE OF SUCH A MATERIAL - The invention relates to a silicon/carbon composite material, to a method for the synthesis thereof and to the use of such a material. The silicon/carbon composite material is formed by an aggregate of silicon particles and of carbon particles, in which the silicon particles and the carbon particles are dispersed. The carbon particles are formed by at least three different carbon types, a first type of carbon being selected from among non-porous spherical graphites, a second type of carbon being selected from among non-spherical graphites and a third type of carbon being selected from among porous electronically-conductive carbons. The first and second carbon types each have a mean particle size ranging between 0.1 μm and 100 μm and the third carbon type has a mean particle size smaller than or equal to 100 nanometers. | 10-17-2013 |
20130280614 | Silicon-Based Anode Active Material And Secondary Battery Comprising The Same - Disclosed herein is a silicon-based anode active material, comprising a silicon phase, a SiO | 10-24-2013 |
20130288130 | NEGATIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, RECHARGEABLE LITHIUM BATTERY INCLUDING SAME AND METHOD OF PREPARING RECHARGEABLE LITHIUM BATTERY - A negative electrode for a rechargeable lithium battery that includes a negative active material layer including a carbon-based material having a peak of about 20 degrees to 30 degrees at a (002) plane in an X-ray diffraction pattern using a CuKα ray, and an SEI (solid electrolyte interface) passivation film including at least one material selected from an organic material and an inorganic material and having an average thickness of about 10 nm to about 50 nm on the surface of the active material layer of the electrode. | 10-31-2013 |
20130288131 | METHOD FOR PREPARING ANODE ACTIVE MATERIAL - Disclosed is a method including (a) mixing a precursor of a material for preparing at least one material selected from the group consisting of low crystalline carbon and amorphous carbon with a hydrophilic material, followed by purification to prepare a mixture for coating, (b) mixing the mixture for coating with a crystalline carbon-based material to prepare a core-shell precursor in which the mixture for coating is coated on a core including a crystalline carbon-based material, and (c) calcining the core-shell precursor to carbonize the material for preparing the at least one material selected from the group consisting of low crystalline carbon and amorphous carbon into the at least one material selected from the group consisting of low crystalline carbon and amorphous carbon. | 10-31-2013 |
20130295463 | CATHODE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES AND METHOD FOR PRODUCING SAME - A cathode material for a lithium ion secondary battery includes: a metal oxide as a cathode active material; and a carbon material which coats at least a part of a surface of a particle of the metal oxide, wherein the cathode material has hydrophilicity so as to be precipitated into pure water. | 11-07-2013 |
20130302692 | Graphite Material With Lattice Distortion for Use in Lithium-Ion Secondary Battery Negative Electrodes, and Lithium-Ion Secondary Battery - This disclosure concerns graphite materials having lattice distortion for lithium-ion secondary battery negative electrode obtained by a manufacturing method comprising the steps of: pulverizing and classifying a raw coke composition obtained from a heavy-oil composition undergone coking by delayed coking process, the raw coke composition having a H/C atomic ratio that is a ratio of hydrogen atoms H and carbon atoms C of 0.30 to 0.50 and having a micro-strength of 7 to 17 mass % to obtain powder of the raw coke composition; giving compressive stress and shear stress to the powder of the raw coke composition so that average circularity is 0.91 to 0.97 to obtain round powder; heating the round powder to obtain a carbonized composition; and graphitizing the carbonized composition. | 11-14-2013 |
20130302693 | GRAPHENE POWDER, PRODUCTION METHOD THEREOF, AND ELECTROCHEMICAL DEVICE COMPRISING SAME - Provided are a graphene powder, a production method thereof, and an electrochemical device comprising the same. The graphene powder has an elemental ratio of oxygen atoms to carbon atoms of not less than 0.07 and not more than 0.13 and an elemental ratio of nitrogen atoms to carbon atoms of not more than 0.01. In the production method, the graphene powder is produced by using a dithionous acid salt as a reducing agent. Since the graphene has a low content of nitrogen atoms and a proper amount of oxygen atoms and a proper defect, the graphene is provided with good performance of both dispersibility and conductive property, and is usable as a good conductive additive, such as the one for a lithium ion battery electrode. The production method has the advantages of low cost, high efficiency and low toxicity. | 11-14-2013 |
20130309577 | ELECTRODE ACTIVE MATERIAL, ELECTRODE AND ELECTRICAL STORAGE DEVICE - The electrode active material includes a carbon material having a volume of macropores with 50 to 400 nm pore diameters of 0.05 to 0.40 cc/g. The carbon material may be a composite carbon material that contains a carbon material forming a core, and a coating carbon material covering at least part of the core-forming carbon material. | 11-21-2013 |
20130309578 | NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES, AND METHOD FOR PRODUCING SAME - A negative electrode material for lithium ion secondary batteries comprises amorphous coated particles that are composed of a plurality of consolidated particles having no specific shape, said consolidated particles being obtained by consolidating a plurality of primary spheroidized graphite particles, and 0.5-20% by mass of an amorphous carbon layer that covers the surfaces of the consolidated particles and binds the consolidated particles with each other; and 0.5-20% by mass of a highly crystalline carbon layer that is formed so as to cover the outer surfaces of the amorphous coated particles and has an interplanar distance ascribed to CVD processing of 0.335 nm or more but less than 0.3369 nm. The negative electrode material for lithium ion secondary batteries is also characterized by having a porosity of 5% by volume or less, and a method for producing the negative electrode material for lithium ion secondary batteries. | 11-21-2013 |
20130316243 | POWER STORAGE DEVICE AND METHOD FOR MANUFACTURING THE SAME - A power storage device including a negative electrode having high cycle performance in which little deterioration due to charge and discharge occurs is manufactured. A power storage device including a positive electrode, a negative electrode, and an electrolyte provided between the positive electrode and the negative electrode is manufactured, in which the negative electrode includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer includes an uneven silicon layer formed over the negative electrode current collector, a silicon oxide layer or a mixed layer which includes silicon oxide and a silicate compound and is in contact with the silicon layer, and graphene in contact with the silicon oxide layer or the mixed layer including the silicon oxide and the silicate compound. | 11-28-2013 |
20130316244 | ELECTRODE FOR LITHIUM ION BATTERIES AND THE METHOD FOR MANUFACTURING THE SAME - An electrode is formed of a ternary composite of silicon, carbon, and carbon filter foil, for lithium ion batteries. Also described is a method for manufacturing silicon/carbon/carbon fiber foil composite electrode for lithium batteries, including: mixing silicon and an organic substance capable of forming carbon after heat treatment, in a solvent, to form a slurry; immersing the carbon fiber foil in said slurry until the slurry coats on and penetrates into the carbon fiber foil; and heating the carbon fiber foil, which has been coated and penetrated with the slurry, in an inert gas atmosphere or all inert gas atmosphere mixed with a reductive gas at a temperature of at least 400° C. for at least 2 hours. | 11-28-2013 |
20130323600 | Potato-Shaped Graphite Particles with Low impurity Rate at the Surface, Method for Preparing the Same - Modified graphite particles are obtained from graphite or based on graphite. The particles have impurities in their internal structure and have on the surface a low, even nil, rate of an impurity or several impurities. In addition, these particles have at least one of the following characteristics: a tab density between 0.3 and 1.5 g/cc; a potatolike shape; and a granulometric dispersion such that the D90/D10 ratio varies between 2 and 5 and the particles have a size between 1 and 50 μm. These particles can be used for fuel cells, electrochemical generators, or as moisture absorbers and/or oxygen absorbers and they have important electrochemical properties. The electrochemical cells and batteries thus obtained are stable and safe. | 12-05-2013 |
20130323601 | GRAPHITE CARBON COMPOSITE MATERIAL, CARBON MATERIAL FOR BATTERY ELECTRODES, AND BATTERIES - A graphite carbon composite material including a graphite material having diversity in the sizes of optical anisotropic structure and optical isotropic structure, the ratio thereof, and crystal direction, and a carbon material on the way to a graphitized structure of easily-graphitizable carbon. Also disclosed is a carbon material for a battery electrode, a past for an electrode, an electrode, a battery, a lithium ion secondary battery and a method of producing the graphite carbon composite material. | 12-05-2013 |
20130337334 | ELECTRODE MATERIAL HAVING A HIGH CAPACITY - The invention accordingly provides a silicon-carbon composite which has at least a proportion of hard carbon and a proportion of silicon powder and is obtained by, under a noble gas atmosphere, a) treating the hard carbon component at least once with high energy in a mechanofusion mixer and b) subsequently adding the silicon powder component thereto and mixing the components, or adding the silicon powder component during step a) and continuing the mechanofusion treatment, and is characterized in that the composite has an average particle size of less than or equal to 12 μm, a proportion of hard carbon of from 5 to 50% by weight and a proportion of silicon powder of from 5 to 50% by weight. | 12-19-2013 |
20130337335 | NEGATIVE ELECTRODE MATERIAL FOR A SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME - The present invention relates to a negative electrode material for a secondary battery and to a method for manufacturing same. The negative electrode material includes a graphite matrix and a plurality of tin-oxide nanorods disposed on the graphite matrix. Thus, when the negative electrode material is used as the negative electrode for a secondary battery, the negative electrode material may provide high initial capacity (1010 mAhg | 12-19-2013 |
20130344390 | SYNTHESIS AND APPLICATIONS OF GRAPHENE BASED NANOMATERIALS - A composition of graphene-based nanomaterials and a method of preparing the composition are provided. A carbon-based precursor is dissolved in water to form a precursor suspension. The precursor suspension is placed onto a substrate, thereby forming a precursor assembly. The precursor assembly is annealed, thereby forming the graphene-based nanomaterials. The graphene-based nanomaterials are crystallographically ordered at least in part and configured to form a plurality of diffraction rings when probed by an incident electron beam. In one aspect, the graphene-based nanomaterials are semiconducting. In one aspect, a method of engineering an energy bandgap of graphene monoxide generally includes providing at least one atomic layer of graphene monoxide having a first energy bandgap, and applying a substantially planar strain is applied to the graphene monoxide, thereby tuning the first energy band gap to a second energy bandgap. | 12-26-2013 |
20130344391 | MULTI-SHELL STRUCTURES AND FABRICATION METHODS FOR BATTERY ACTIVE MATERIALS WITH EXPANSION PROPERTIES - Battery electrode compositions are provided comprising core-shell composites. Each of the composites may comprise, for example, an active material, a collapsible core, and a shell. The active material may be provided to store and release metal ions during battery operation, whereby the storing and releasing of the metal ions causes a substantial change in volume of the active material. The collapsible core may be disposed in combination with the active material to accommodate the changes in volume. The shell may at least partially encase the active material and the core, the shell being formed from a material that is substantially permeable to the metal ions stored and released by the active material. | 12-26-2013 |
20130344392 | CRUMPLED GRAPHENE-ENCAPSULATED NANOSTRUCTURES AND LITHIUM ION BATTERY ANODES MADE THEREFROM - Capsules comprising crumpled graphene sheets that form a crumpled graphene shell encapsulating an internal cargo comprising nanostructures of a second component are provided. Also provided are anode materials for lithium ion batteries comprising the capsules, wherein the nanostructures are composed of an electrochemically active material, such as silicon. | 12-26-2013 |
20130344393 | COMPOSITE MATERIAL OF CARBON-COATED GRAPHENE OXIDE, PREPARATION METHOD AND APPLICATION THEREOF - A composite material of carbon-coated graphene oxide, its preparation method and application are provided. The method for preparing the composite material comprises the following steps: obtaining graphene oxide; mixing the said graphene oxide and the source of organic carbon according to the mass ratio of 1-10:1 in water to form a mixed solution; making the mixed solution react hydrothermally under the condition of 100˜250° C., cooling, solid-liquid separating, washing, and drying to attain the composite material. The advantages of the preparation method are simple process, low energy consumption, low cost, no pollution and suitable for industrial production. The advantages of composite material are stable structural performance, high electric conductivity. Lithium ion battery and/or capacitor have/has high power density while the composite material is used to prepare the anode material of lithium ion battery and/or capacitor. | 12-26-2013 |
20130344394 | TIN CARBON COMPOSITE, METHOD FOR PREPARING SAME, BATTERY NEGATIVE ELECTRODE COMPONENT COMPRISING SAME, AND BATTERY HAVING THE NEGATIVE ELECTRODE COMPONENT - Disclosed is a tin-carbon mesoporous composite for a lithium ion battery negative electrode material, and a method for preparing the same. Using a mesoporous molecular sieve as a template, the precursors of tin and carbon are caused to fill the mesopores of the template and carbonized under nitrogen to obtain a composite of stannic oxide and carbon, and the stannic oxide is encapsulated by the carbon; and then the tin-carbon mesoporous composite for lithium ion battery negative electrode material is obtained by hydrothermal treatment, carbonization, etching, and high temperature carbothermic reduction. The tin-carbon mesoporous composite for lithium ion battery negative electrode material synthesized in the present invention has a reversible capacity of 550 mAh·g | 12-26-2013 |
20140004426 | FABRICATION AND USE OF CARBON-COATED SILICON MONOXIDE FOR LITHIUM-ION BATTERIES | 01-02-2014 |
20140017568 | ELECTROCHEMICAL HIGH RATE STORAGE MATERIALS, PROCESS AND ELECTRODES - A non-activated, majority non-graphitic amorphous carbon material may be produced by supplying a carbonized precursor material, heating the carbonized precursor material in a first heating step at a temperature and for a duration sufficient to produce a heat-treated carbon material that has a specific surface area less than about 500 m | 01-16-2014 |
20140017569 | DOPED CARBON-SULFUR SPECIES NANOCOMPOSITE CATHODE FOR LI-S BATTERIES - We report a heteroatom-doped carbon framework that acts both as conductive network and polysulfide immobilizer for lithium-sulfur cathodes. The doped carbon forms chemical bonding with elemental sulfur and/or sulfur compound. This can significantly inhibit the diffusion of lithium polysulfides in the electrolyte, leading to high capacity retention and high coulombic efficiency. | 01-16-2014 |
20140017570 | NEGATIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR PRODUCING THE NEGATIVE ELECTRODE ACTIVE MATERIAL, AND LITHIUM ION SECONDARY BATTERY USING THE NEGATIVE ELECTRODE ACTIVE MATERIAL - Disclosed is a negative electrode active material which is capable of occluding and releasing lithium, and has high reversible capacity and reduced initial irreversible capacity. This negative electrode active material includes a granulated substance, in which a composite containing nanosize conductive carbon powder and tin oxide powder contacting the surface of the conductive carbon powder in a highly dispersed state and an aggregate selected from the group consisting of graphite and nongraphitizable carbon are aggregated. The electrochemical decomposition of electrolytic solution is suppressed due to a reduction in the area where the carbon material in the granulated substance and the electrolytic solution are in contact, resulting in a significant reduction in the initial irreversible capacity of the negative electrode active material. | 01-16-2014 |
20140023929 | Silicon-Containing Carbonaceous Composite Material - Using a silicon-containing carbon-based composite material represented by the compositional formula: SiO | 01-23-2014 |
20140030599 | Electrode Active Material For Secondary Battery - Disclosed herein is an electrode active material for a secondary battery, and more particularly to an electrode active material comprising a porous silicon oxide-based composite and the method for preparing a porous silicon oxide-based composite. | 01-30-2014 |
20140030600 | GRAPHENE SHEET, TRANSPARENT ELECTRODE AND ACTIVE LAYER INCLUDING THE SAME, AND DISPLAY, ELECTRONIC DEVICE, OPTOELECTRONIC DEVICE, BATTERY, SOLAR CELL, AND DYE-SENSITIZED SOLAR CELL INCLUDING TRANSPARENT ELECTRODE OR ACTIVE LAYER - A graphene sheet including a lower sheet including 1 to 20 layers of graphene, and a ridge formed on the lower sheet and including more layers of the graphene compared with the lower sheet, the ridge having a shape of a grain boundary of a metal, a transparent electrode and an active layer including the same, and a display, an electronic device, an optoelectronic device, a battery, a solar cell, and a dye-sensitized solar cell including the transparent electrode and/or the active layer are provided. | 01-30-2014 |
20140030601 | CARBON MATERIAL FOR NEGATIVE ELECTRODE OF LITHIUM ION SECONDARY BATTERY AND PRODUCTION METHOD THEREFOR - The carbon material for a negative electrode of a lithium ion secondary battery includes: particles having a structure including a plurality of stacked plates which are prepared from a raw coke materials obtained by a delayed coking method, where the ratio of the total of the generation rate of a hydrogen gas, a hydrocarbon gas having one carbon atom, and a hydrocarbon gas having two carbon atoms and the formation rate of a raw coke materials satisfies the condition: total of generation rate/formation rate=0.30 to 0.60, and where the structure is curved into a bow shape, and where, in each of the plates, an average plate thickness is defined as T, an average bow height including the plate thickness is defined as H, and an average length in the vertical direction is defined as L, L/T is 5.0 or more and H/T is from 1.10 to 1.25. | 01-30-2014 |
20140045072 | POROUS CARBON PRODUCT WITH LAYER COMPOSITE STRUCTURE, METHOD FOR PRODUCING SAME AND USE THEREOF - Inexpensive product consisting of porous carbon, with a pore structure which is suitable for retaining electrode parts which can be used in particular for a use as an electrode material for a lithium-sulphur secondary battery, and a method comprising the following method steps: (a) providing a template consisting of inorganic material which contains spherical nanoparticles and pores, (b) infiltrating the pores of the template with a precursor for carbon of a first variety, (c) carbonizing so as to form an inner layer on the nanoparticles with a first microporosity, (d) infiltrating the remaining pores of the template with a precursor substance for carbon of a second variety, (e) carbonizing the precursor substance, wherein an outer layer with a second microporosity which is lower than the first microporosity is produced on the inner layer, and (f) removing the template so as to form the carbon product with layer composite structure, comprising an inner layer consisting carbon with a first, relatively high microporosity, which has a free surface facing a cavity, and an outer layer consisting of carbon with a second, relatively low microporosity, which has a free surface facing away from the cavity. | 02-13-2014 |
20140050987 | NEGATIVE ELECTRODE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD FOR PREPARING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - Disclosed are a negative active material for a rechargeable lithium battery that includes a core including a material being capable of doping and dedoping lithium, an oxide layer of the material being capable of doping and dedoping lithium formed on the exterior of the core including a material being capable of doping and dedoping lithium, and a carbon layer formed on the exterior of the oxide layer of the material being capable of doping and dedoping lithium, a method for preparing a negative active material for a rechargeable lithium battery, and a rechargeable lithium battery including the same. | 02-20-2014 |
20140065487 | FORMING GAS TREATMENT OF LITHIUM ION BATTERY ANODE GRAPHITE POWDERS - The invention provides a method of making a battery anode in which a quantity of graphite powder is provided. The temperature of the graphite powder is raised from a starting temperature to a first temperature between 1000 and 2000° C. during a first heating period. The graphite powder is then cooled to a final temperature during a cool down period. The graphite powder is contacted with a forming gas during at least one of the first heating period and the cool down period. The forming gas includes H | 03-06-2014 |
20140065488 | METHOD OF PREPARING NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, AND NEGATIVE ACTIVE MATERIAL AND RECHARGEABLE LITHIUM BATTERY PREPARED FROM THE SAME - Disclosed are a method of preparing a negative active material for a rechargeable lithium battery that includes preparing a solution including spherically shaped natural graphite particles and a solvent, ultrasonic wave-treating the solution, and drying the ultrasonic wave-treated solution to prepare graphite modified particles, and a rechargeable lithium battery prepared therefrom. | 03-06-2014 |
20140072876 | POROUS AMORPHOUS SILICON-CARBON NANOTUBE COMPOSITE BASED ELECTRODES FOR BATTERY APPLICATIONS - Embodiments of the present invention generally relate to methods and apparatus for forming an energy storage device. More particularly, embodiments described herein relate to methods of forming electric batteries and electrochemical capacitors. In one embodiment a method of forming a high surface area electrode for use in an energy storage device is provided. The method comprises forming an amorphous silicon layer on a current collector having a conductive surface, immersing the amorphous silicon layer in an electrolytic solution to form a series of interconnected pores in the amorphous silicon layer, and forming carbon nanotubes within the series of interconnected pores of the amorphous silicon layer. | 03-13-2014 |
20140080004 | CARBONACEOUS MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY NEGATIVE ELECTRODE - The object of the present invention is to provide a carbonaceous material for a negative electrode of non-aqueous electrolyte secondary batteries having a great charge-discharge capacity, high charge-discharge efficiency, and an excellent charge-discharge cycle characteristic. | 03-20-2014 |
20140080005 | SECONDARY BATTERY AND METHOD FOR PRODUCING SECONDARY BATTERY - A secondary battery is provided with a negative electrode sheet including a negative active material layer including negative active material particles. The negative active layer contains, as the negative active material particles, graphite particles formed from graphite and amorphous carbon particles formed from amorphous carbon. The difference (ΔS)(=Sb−Sa) in specific surface area between the specific surface area (Sb) of the amorphous carbon particles and the specific surface area (Sa) of the graphite particles is −0.3 to 2.6 m | 03-20-2014 |
20140087267 | Graphite Negative Material for Lithium-Ion Battery, Method for Preparing the Same and Lithium-Ion Battery - A graphite negative material for a lithium-ion battery includes a number of graphite layers parallel to each other. A number of channels are through the graphite layers. And the channels are capable of allowing lithium ions to pass therethrough freely. A method for preparing the graphite negative material and a lithium-ion battery including the graphite negative material are also provided. | 03-27-2014 |
20140087268 | CARBON-SILICON COMPOSITE, METHOD OF PREPARING THE SAME, AND ANODE ACTIVE MATERIAL INCLUDING THE CARBON-SILICON COMPOSITE - Provided are a carbon-silicon composite having improved capacity and cycle stability, and a method of preparing the same. More particularly, the present invention relates to a carbon-silicon composite, in which surfaces of silicon particles are coated with a carbon-based material that is doped with at least one type of doping atoms selected from the group consisting of nitrogen (N), phosphorous (P), boron (B), sodium (Na), and aluminum (Al), and a method of preparing the same. | 03-27-2014 |
20140093780 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides a non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode having a negative active material, and a non-aqueous electrolyte, characterized in that the negative active material contains composite particle (C), which has silicon-containing particle (A) and electronic conductive additive (B), the silicon-containing particle (A) has a content of carbon, and when measured at a temperature rising rate of 10±2° C./min by thermogravimetry, said composite particle (C) exhibits two stages of weight loss in the range of 30 to 1000° C. | 04-03-2014 |
20140093781 | Modified Natural Graphite Particles - A modified natural graphite material which provides a negative plate having improved adhesion between a negative electrode mixture and a current collector has a circularity of at least 0.92 and at most 1.0 and an incident angle dependence S | 04-03-2014 |
20140099553 | MESOPOROUS CARBON STRUCTURES, PREPARATION METHOD THEREOF AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - Provided are mesoporous carbon structures and a method for preparing the same. The mesoporous carbon structures have a high surface area, a large pore volume and a large pore size in addition to a small mesopore length. Therefore, when using the mesoporous carbon structures as an anode active material for a lithium secondary battery, it is possible to provide a lithium secondary battery with excellent lithium ion storability and charge/discharge efficiency. | 04-10-2014 |
20140099554 | MATERIAL FOR ELECTRODE OF POWER STORAGE DEVICE, POWER STORAGE DEVICE, AND ELECTRICAL APPLIANCE - To improve the reliability of a power storage device. A granular active material including carbon is used, and a net-like structure is formed on part of a surface of the granular active material. In the net-like structure, a carbon atom included in the granular active material is bonded to a silicon atom or a metal atom through an oxygen atom. Formation of the net-like structure suppresses reductive decomposition of an electrolyte solution, leading to a reduction in irreversible capacity. A power storage device using the above active material has high cycle performance and high reliability. | 04-10-2014 |
20140099555 | NONAQUEOUS ELECTROLYTIC SOLUTION SECONDARY BATTERY AND METHOD OF MANUFACTURING THE BATTERY - A nonaqueous electrolytic solution secondary battery includes: a positive electrode; a negative electrode provided with a negative electrode active material layer containing at least a negative electrode active material; a nonaqueous electrolytic solution; and a coat containing phosphorus (P) atoms formed on a surface of the negative electrode active material, in which a ratio of an amount of phosphorus atoms per unit area of the negative electrode active material layer M | 04-10-2014 |
20140106229 | BATTERY ELECTRODE, BATTERY, AND METHOD FOR MANUFACTURING A BATTERY ELECTRODE - A battery electrode in accordance with various embodiments may include: a substrate including a surface configured to face an ion-carrying electrolyte; and a first diffusivity changing region at a first portion of the surface, wherein the first diffusivity changing region is configured to change diffusion of ions carried by the electrolyte into the substrate, and wherein a second portion of the surface is free from the first diffusivity changing region. | 04-17-2014 |
20140106230 | NEGATIVE ACTIVE MATERIAL, METHOD OF MANUFACTURING THE SAME, AND LITHIUM BATTERY INCLUDING THE NEGATIVE ACTIVE MATERIAL - In an aspect, a negative active material, a method of preparing the negative active material, and a lithium battery including the negative active material are provided. The method of preparing the negative active material may increase pulverizing efficiency in pulverizing a silicon-based bulky particle into a nano-size silicon-based primary particle and decrease a capacity loss of the obtained negative active material. The nano-size negative active material has excellent crystalline characteristics, high capacity, and high initial efficiency, due to a decrease in surface oxidation and surface damage. | 04-17-2014 |
20140106231 | SILICON OXIDE-CARBON COMPOSITE AND METHOD OF MANUFACTURING THE SAME - Provided are a silicon oxide-carbon composite and a method of manufacturing the same. More particularly, the present invention provides a method of manufacturing a silicon oxide-carbon composite including mixing silicon and silicon dioxide to be included in a reaction chamber, depressurizing a pressure of the reaction chamber to obtain a high degree of vacuum while increasing a temperature in the reaction chamber to a reaction temperature, reacting the mixture of silicon and silicon dioxide in a reducing atmosphere, and coating a surface of silicon oxide manufactured by the reaction with carbon, and a silicon oxide-carbon composite manufactured thereby. | 04-17-2014 |
20140113199 | NANO-SILICON COMPOSITE LITHIUM ION BATTERY ANODE MATERIAL COATED WITH POLY (3,4-ETHYLENEDIOXYTHIOPHENE) AS CARBON SOURCE AND PREPARATION METHOD THEREOF - A high-performance new silicon composite material for a negative electrode of a lithium ion battery and a preparation method thereof by utilizes a conductive polymer PEDOT and a water solution dispersant PSS as a coating layer of nano-Si powder and a carbon source. The Si/C composite material taking a Si-containing type lithium storage material as a main active substance is prepared by firstly polymerizing PEDOT: PSS on the surface of Si through in-situ polymerization reaction and then performing high-temperature carbonization treatment on a prepared Si/PEDOT: PSS composite under an inert atmosphere. The prepared composite material is doped with a small amount of S element. Nano-Si particles are uniformly embedded in a PEDOT: PSS polymer and a carbon matrix. A high yield is achieved by using cheap raw materials and a simple and environment-friendly process. The prepared Si/C composite material has very low initial irreversible capacity loss (2.8%) and excellent charge-discharge. | 04-24-2014 |
20140113200 | Functionalized Carbon Electrode, Related Material, Process for Production, and Use Thereof - The present invention relates to a material for use as an electrode for electrochemical energy storage devices such as electrochemical capacitors (ECs) and secondary batteries, primary batteries, metal/air batteries, fuel cells, flow batteries and a method for producing the same. More specifically, this invention relates to an electrode material consisting of a functionalized porous carbon, a method for producing the same, and an energy storage device using said electrode materials. | 04-24-2014 |
20140127584 | POPCORN-LIKE GROWTH OF GRAPHENE-CARBON NANOTUBE MULTI-STACK HYBRID THREE-DIMENSIONAL ARCHITECTURE FOR ENERGY STORAGE DEVICES - Graphene-carbon nanotube multi-stack three-dimensional architectures (graphene-CNT stacks) are formed by a “popcorn-like” growth method, in which carbon nanotubes are grown throughout the architecture in a continuous step. Alternating layers of graphene and a transition metal are grown by a vapor deposition process. The metal is fragmented and etched to form an array of catalytic sites. Carbon nanotubes grow from the catalytic sites in a vapor-solid-liquid process. The graphene-CNT stacks have applications in electrical energy storage devices, such as supercapacitors and batteries. The directly grown carbon nanotube array between graphene layers provides ease of ion diffusion and electron transfer, in addition to being an active material, spacer and electron pathway. | 05-08-2014 |
20140127585 | POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, VEHICLE, AND PROCESS FOR PRODUCING NONAQUEOUS ELECTROLYTE SECONDARY BATTERY POSITIVE ELECTRODE ACTIVE MATERIAL - It is intended to provide a positive electrode active material, which contains a lithium silicate based compound and has superior conductivity, for nonaqueous electrolyte secondary battery, a process for producing the same, and a nonaqueous electrolyte secondary battery using the positive electrode active material. The lithium silicate based compound and a carbon material are mixed at 450 to 16000 rpm for 1 minute to 10 hours and then heated and pressurized at 500° C. to 700° C. at 1 to 500 MPa for 1 minute to 15 hours, thereby adhering the lithium silicate based compound and the carbon material to each other. | 05-08-2014 |
20140127586 | ALIGNED CARBON NANOTUBE ASSEMBLY, CARBON-BASED ELECTRODE, POWER STORAGE DEVICE, AND METHOD OF MANUFACTURING ALIGNED CARBON NANOTUBE ASSEMBLY - The present invention provides an aligned carbon nanotube assembly constituted of carbon nanotubes each having a defective pore on its side surface, a method of manufacturing the aligned carbon nanotube assembly, a carbon-based electrode, and a power storage device. The aligned carbon nanotube assembly is formed by aggregating a large number of carbon nanotubes aligned in parallel along the same direction and having parallel orientation. In such a state that the aligned carbon nanotube assembly remains grown, the carbon nanotube constituting the aligned carbon nanotube assembly has a defective pore on its side surface. In a raman spectrum of the aligned carbon nanotube assembly in a Raman spectrometric method, when intensity of scattered light in D-band is represented by I | 05-08-2014 |
20140134494 | METHOD FOR PREPARING CARBIDE-DERIVED CARBON-BASED ANODE ACTIVE MATERIAL AND ANODE ACTIVE MATERIAL PREPARED BY THE SAME - Disclosed is a method for preparing a carbide-derived carbon-based anode active material. The method includes preparing carbide-derived carbon, and expanding pores of the carbide-derived carbon. Here, expanding of pores is performed as an activation process of heating the prepared carbide-derived carbon in the air. The pores formed inside the carbide-derived carbon can be expanded during the activation process in the preparation of the carbide-derived carbon-based anode active material. In addition, by applying the carbide-derived carbon to an anode active material, lithium secondary battery having improved charge-discharge efficiency can be prepared. | 05-15-2014 |
20140134495 | SILICON-CARBONACEOUS ENCAPSULATED MATERIALS - A process includes preparing a solution including a silicon precursor or mixture of silicon precursors and a monomer or mixture of monomers; polymerizing the monomer to form a polymer-silicon precursor matrix; and pyrolyzing the polymer-silicon precursor matrix to form an electrochemically active carbon-coated silicon material. | 05-15-2014 |
20140147751 | Silicon-carbon Composite Anode Material for Lithium Ion Batteries and A Preparation Method Thereof - Disclosed in the invention are a silicon-carbon composite anode material for lithium ion batteries and a preparation method thereof The material consists of a porous silicon substrate and a carbon coating layer. The preparation method of the material comprises preparing a porous silicon substrate and a carbon coating layer. The silicon-carbon composite anode material for lithium ion batteries has the advantages of high reversible capacity, good cycle performance and good rate performance. The material respectively shows reversible capacities of 1,556 mAh, 1,290 mAh, 877 mAh and 474 mAh/g at 0.2 C, 1 C, 4 C and 15 C rates; the specific capacity remains above 1,500 mAh after 40 cycles at the rate of 0.2 C and the reversible capacity retention rate is up to 90 percent. | 05-29-2014 |
20140154577 | LITHIUM ION BATTERIES USING DISCRETE CARBON NANOTUBES, METHODS FOR PRODUCTION THEREOF AND PRODUCTS OBTAINED THEREFROM - Compositions, and methods of obtaining them, useful for lithium ion batteries comprising discrete oxidized carbon nanotubes having attached to their surface lithium ion active materials in the form of nanometer sized crystals or layers. The composition can further comprise graphene or oxygenated graphene. | 06-05-2014 |
20140154578 | ANODE ACTIVE MATERIAL INCLUDING POROUS SILICON OXIDE-CARBON MATERIAL COMPOSITE AND METHOD OF PREPARING THE SAME - Provided are an anode active material including a porous silicon oxide-carbon material composite which includes a porous silicon oxide including pores and a line-type carbon material coated on a surface, in the pores, or on the surface and in the pores of the porous silicon oxide, and a method of preparing the anode active material. | 06-05-2014 |
20140154579 | LITHIUM ION SECONDARY BATTERY - A lithium ion secondary battery | 06-05-2014 |
20140162129 | NEGATIVE ELECTRODE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, NEGATIVE ELECTRODE AND LITHIUM SECONDARY BATTERY EMPLOYING THE ELECTRODE INCLUDING THE NEGATIVE ELECTRODE ACTIVE MATERIAL - In an aspect, a negative electrode active material, a method of preparing the same, and a lithium secondary battery having the negative electrode including the negative electrode active material is provided. The negative electrode active material may include amorphous silicon oxide, crystalline silicon, carbon, metal silicide, spherical particles and whiskers. | 06-12-2014 |
20140162130 | COMPOSITIONS COMPRISING FREE-STANDING TWO-DIMENSIONAL NANOCRYSTALS - The present invention is directed to compositions comprising free standing and stacked assemblies of two dimensional crystalline solids, and methods of making the same. | 06-12-2014 |
20140162131 | STRUCTURED PARTICLES - A powder comprising pillared particles for use as an active component of a metal ion battery, the pillared particles comprising a particle core and a plurality of pillars extending from the particle core, wherein the pillared particles are formed from a starting material powder wherein at least 10% of the total volume of the starting material powder is made up of starting material particles having a particle size of no more than 10 microns. | 06-12-2014 |
20140170498 | SILICON PARTICLES FOR BATTERY ELECTRODES - Silicon particles for active materials and electro-chemical cells are provided. The active materials comprising silicon particles described herein can be utilized as an electrode material for a battery. In certain embodiments, the composite material includes greater than 0% and less than about 90% by weight silicon particles, the silicon particles having an average particle size between about 10 nm and about 40 μm, and greater than 0% and less than about 90% by weight of one or more types of carbon phases, wherein at least one of the one or more types of carbon phases is a substantially continuous phase. | 06-19-2014 |
20140170499 | METHOD FOR PRODUCING ANODE FOR LITHIUM SECONDARY BATTERY AND ANODE COMPOSITION, AND LITHIUM SECONDARY BATTERY - The invention relates to an anode for lithium secondary battery comprising vapor grown carbon fiber uniformly dispersed without forming an agglomerate of 10 μm or larger in an anode active material using natural graphite or artificial graphite, which anode is excellent in long cycle life and large current characteristics. Composition used for production for the anode can be produced, for example, by mixing a thickening agent solution containing an anode active material, a thickening agent aqueous solution and styrene butadiene rubber as binder with a composition containing carbon fiber dispersed in a thickening agent with a predetermined viscosity or by mixing an anode active material with vapor grown carbon fiber in dry state and then adding polyvinylidene difluoride thereto. | 06-19-2014 |
20140170500 | ELECTRODE FOR POWER STORAGE DEVICE AND POWER STORAGE DEVICE - An electrode for a power storage device with good cycle characteristics and high charge/discharge capacity is provided. In addition, a power storage device including the electrode is provided. The electrode for the power storage device includes a conductive layer and an active material layer provided over the conductive layer, the active material layer includes graphene and an active material including a plurality of whiskers, and the graphene is provided to be attached to a surface portion of the active material including a plurality of whiskers and to have holes in part of the active material layer. Further, in the electrode for the power storage device, the graphene is provided to be attached to a surface portion of the active material including a plurality of whiskers and to cover the active material including a plurality of whiskers. Further, the power storage device including the electrode is manufactured. | 06-19-2014 |
20140170501 | LITHIUM-ION SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME - A Lithium-ion secondary battery ( | 06-19-2014 |
20140178764 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, NEGATIVE ELECTRODE AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - In an aspect, a negative active material for a rechargeable lithium battery that includes amorphous carbon, wherein the amorphous carbon may generally have a relatively larger average lattice distance (d | 06-26-2014 |
20140199596 | Sodium-Based Energy Storage Device Based on Surface-Driven Reactions - The performance of sodium-based energy storage devices can be improved according to methods and devices based on surface-driven reactions between sodium ions and functional groups attached to surfaces of the cathode. The cathode substrate, which includes a conductive material, can provide high electron conductivity while the surface functional groups can provide reaction sites to store sodium ions. During discharge cycles, sodium ions will bind to the surface functional groups. During charge cycles, the sodium ions will be released from the surface functional groups. The surface-driven reactions are preferred compared to intercalation reactions. | 07-17-2014 |
20140212760 | MULTI-LAYER THIN CARBON FILMS, ELECTRODES INCORPORATING THE SAME, ENERGY STORAGE DEVICES INCORPORATING THE SAME, AND METHODS OF MAKING SAME - The invention provides improved paper-like electrodes and electrode active materials for use in flexible energy storage devices, and methods for preparing such electrodes and materials, as well as flexible energy storage devices fabricated from such electrodes and materials and methods of making such devices. The electrodes and electrode active materials comprise multi-layer high-quality thin carbon films, and the methods comprise the use of a repetitive laminar process to deposit such films directly on polymer separators or electrolyte membranes. | 07-31-2014 |
20140212761 | ELECTRODE MATERIAL, ELECTRODE AND LITHIUM ION BATTERY - An electrode material of the invention includes an agglomerate formed by agglomerating carbonaceous coated electrode active material particles obtained by forming a carbonaceous coat on surfaces of electrode active material particles at a coating rate of 80% or more, and the carbonaceous coated electrode active material particles include first carbonaceous coated electrode active material particles on which a carbonaceous coat having a film thickness in a range of 0.1 nm to 3.0 nm and an average film thickness in a range of 1.0 nm to 2.0 nm is formed and second carbonaceous coated electrode active material particles on which a carbonaceous coat having a film thickness in a range of 1.0 nm to 10.0 nm and an average film thickness in a range of more than 2.0 nm to 7.0 nm is formed. | 07-31-2014 |
20140212762 | COMPOSITE ELECTRODE MATERIAL - Particles (A) including an element capable of intercalating and deintercalating lithium ions, carbon particles (B) capable of intercalating and deintercalating lithium ions, multi-walled carbon nanotubes (C), carbon nanofibers (D) and optionally electrically conductive carbon particles (E) are mixed in the presence of shear force to obtain a composite electrode material. A lithium ion secondary battery is obtained using the above composite electrode material. | 07-31-2014 |
20140234721 | Mesoporous Silicon Compound used as Lithium-Ion Cell Negative Electrode Material and Preparation Method Thereof - A mesoporous silicon compound includes a mesoporous silicon phase, a metal silicide phase, and a carbon phase. The metal silicide is embedded in mesoporous silicon particles, the surfaces of which are coated with a carbon layer. A weight ratio of elemental silicon to the metal element is from 2:3 to 900:1. The pores of the mesoporous silicon particles have a size distribution from two nanometers to eighty nanometers. | 08-21-2014 |
20140234722 | Si/C COMPOSITE MATERIAL, METHOD FOR MANUFACTURING THE SAME, AND ELECTRODE - The present invention provides composite material in which Si and carbon are combined so as to form an unprecedented structure; method for fabricating the same; and negative electrode material for lithium-ion batteries ensuring high charge-discharge capacity and high cycle performance. By heating an aggregate of Si nanoparticles and using a source gas containing carbon, a carbon layer is formed on each of the Si particles. Walls | 08-21-2014 |
20140242469 | NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - Provided is a negative electrode active material containing SiO | 08-28-2014 |
20140255785 | SILICON-GRAPHENE NANOCOMPOSITES FOR ELECTROCHEMICAL APPLICATIONS - A nanographitic composite for use as an anode in a lithium ion battery includes nanoscale particles of an electroactive material; and a plurality of graphene nanoplatelets having a thickness of 0.34 nm to 5 nm and lateral dimensions of less than 900 nm, wherein the electroactive particle has an average particle size that is larger than the average lateral dimension of the graphene nanoplatelets, and the graphene nanoplatelets coat at least a portion of the nanoscale particles to form a porous nanographitic layer made up of overlapping graphene nanoplatelets. | 09-11-2014 |
20140255786 | PREPARATION METHOD OF HOLLOW CARBON SPHERE AND CARBON SHELL-SULFUR COMPOSITE, HOLLOW CARBON SPHERE, AND CARBON SHELL-SULFUR COMPOSITE FOR SECONDARY LITHIUM SULFUR BATTERY - A preparation method of a hollow carbon sphere includes preparing a hollow carbon sphere including fine pores by using mold particles and a material including metal-phthalocyanine. The prepared hollow carbon sphere has a carbon shell surface including fine pores, and the hollow carbon sphere may be impregnated with sulfur to prepare a carbon shell-sulfur composite and may be utilized as an anode material of a lithium-sulfur secondary battery. The carbon-sulfur composite material may improve extremely low electrical conductivity of sulfur, confine sulfur and lithium polysulfide originated from sulfur in the carbon shell in which fine pores are distributed to prevent lithium polysulfide having an extended chain structure from being dissolved in an electrolyte, minimize a shuttle reaction, reduce an overcharge amount between charging and discharging, and improve performance of a secondary battery. In addition, a method for mass-producing hollow carbon sphere and carbon shell-sulfur composite material is provided. | 09-11-2014 |
20140255787 | ACTIVE MATERIAL FOR BATTERIES - A method of producing an active material for batteries comprising providing electrochemically active particles, optionally comminuting the electrochemically active particles, adding an organic carbon compound, optionally in a suitable organic solvent, and mixing, heating the mixture under protective gas to a temperature above the decomposition limit of the organic compound and below the decomposition temperature of the electrochemically active particles, active materials thus obtained and also corresponding applications and uses. | 09-11-2014 |
20140272591 | LITHIUM ION BATTERY ANODES INCLUDING GRAPHENIC CARBON PARTICLES - Lithium ion battery anodes including graphenic carbon particles are disclosed. Lithium ion batteries containing such anodes are also disclosed. The anodes include mixtures of lithium-reactive metal particles such as silicon, graphenic carbon particles, and a binder. The use of graphenic carbon particles in the anodes results in improved performance of the lithium ion batteries. | 09-18-2014 |
20140272592 | COMPOSITE CARBON MATERIALS COMPRISING LITHIUM ALLOYING ELECTROCHEMICAL MODIFIERS - The present application is generally directed to composites comprising a hard carbon material and an electrochemical modifier. The composite materials find utility in any number of electrical devices, for example, in lithium ion batteries. Methods for making the disclosed composite materials are also disclosed. | 09-18-2014 |
20140272593 | ELECTRODE MATERIAL, ELECTRODE AND LITHIUM ION BATTERY - An electrode material contains an agglomerate formed by agglomerating a plurality of agglomerated particles formed by agglomerating a plurality of particles of a carbonaceous coated electrode active material having a carbonaceous coat formed on a surface, the agglomerate is made up of hollow-structured particles and solid-structured particles, the average particle diameter of the agglomerate is in a range of 0.5 μm to 100 μm, the volume density of the agglomerate is in a range of 50% by volume to 80% by volume, the micropore distribution of micropores present in the agglomerate is monomodal, the average micropore diameter in the micropore distribution is 0.3 μm or less, and the NMP oil absorption amount of the agglomerate is in a range of 40 g/100 g to 100 g/100 g. | 09-18-2014 |
20140287315 | Si/C COMPOSITES AS ANODE MATERIALS FOR LITHIUM ION BATTERIES - The invention relates to a process for producing an Si/C composite, which includes providing an active material containing silicon, providing lignin, bringing the active material into contact with a C precursor containing lignin and carbonizing the active material by converting lignin into inorganic carbon at a temperature of at least 400° C. in an inert gas atmosphere. The invention further provides an Si/C composite, the use thereof as anode material in lithium ion batteries, an anode material for lithium ion batteries which contains such an Si/C composite, a process for producing an anode for a lithium ion battery, in which such an anode material is used, and also a lithium ion battery which includes an anode having an anode material according to the invention. | 09-25-2014 |
20140287316 | ANODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - Provided is an anode for a lithium secondary battery composed of a multi-layered structure including an electrode current collector, a first anode active material layer including a first anode active material formed on the electrode current collector, and a second anode active material layer including a second anode active material having relatively lower press density and relatively larger average particle diameter than the first anode active material. | 09-25-2014 |
20140287317 | METHOD FOR PREPARING A SILICON/CARBON COMPOSITE MATERIAL, MATERIAL SO PREPARED, AND ELECTRODE, IN PARTICULAR NEGATIVE ELECTRODE, COMPRISING SAID MATERIAL - Silicon/carbon composite material, consisting of at least one capsule comprising a silicon shell within which there are carbon nano-objects partially or totally covered with silicon, and silicon nano-objects. The capsule may further comprise an amorphous carbon shell inside the silicon shell and adjacent to the latter. A method for preparing said composite material is disclosed. | 09-25-2014 |
20140295284 | METHOD FOR PRODUCING AMORPHOUS CARBON PARTICLES, AMORPHOUS CARBON PARTICLES, NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY - A method for producing amorphous carbon particles comprising includes adding and mixing graphite particles into a precursor of amorphous carbon and then cross-linking the precursor of amorphous carbon to obtain a first cross-linked product, or cross-linking a precursor of amorphous carbon and then adding and mixing graphite particles into the cross-linked precursor of amorphous carbon to obtain a second cross-linked product. Infusibility is imparted to the first or second cross-linked product to obtain an infusibilized product to which infusibility has been imparted. The infusibilized product is baked to obtain amorphous carbon particles. The amorphous carbon particles include the graphite particles and amorphous carbon which embeds the graphite particles. | 10-02-2014 |
20140302394 | LITHIUM ION BATTERY GRAPHITE NEGATIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREOF - A lithium ion battery graphite negative electrode material and preparation method thereof. The lithium ion battery graphite negative electrode material is a composite material including graphite substrates, surface coating layers coated on the graphite substrates and carbon nanotubes and/or carbon nanofibers grown in situ on the surface of the surface coating layers. The preparation method thereof includes, in solid phase or liquid phase circumstance, the coated carbon material precursor forms the surface coating layer of amorphous carbon by carbonization, and then carbon nanotubes and/or carbon nanofibers having high conductive performance are formed on the surface of the surface coating layers by vapor deposition. This coating mode of the combination of solid phase with gas phase or of liquid phase and gas phase makes the amorphous carbon formed on the surface of the graphite substrates more uniform and dense. The lithium ion battery graphite negative electrode material has properties of high charging-discharging efficiency at first time and excellent cycle stability at either high or low temperatures. The charging-discharging efficiency at first time is up to more than 95%, and the capacity retention after 528 cycles is more than 92%. | 10-09-2014 |
20140302395 | SILICON OXIDE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY NEGATIVE ELECTRODE MATERIAL, METHOD FOR MANUFACTURING THE SAME, LITHIUM ION SECONDARY BATTERY, AND ELECTROCHEMICAL CAPACITOR - According to the present invention, there is provided a silicon oxide for a non-aqueous electrolyte secondary battery negative electrode material wherein the silicon oxide is a carbon-containing silicon oxide obtained by codeposition from a SiO gas and a carbon-containing gas, an the carbon-containing silicon oxide has a carbon content of 0.5 to 30%. As a result, it is possible to provide a silicon oxide which is capable of manufacturing a non-aqueous electrolyte secondary battery having excellent cycle characteristics and a high capacity in case ox using as a negative electrode material, a method for manufacturing the same, and a lithium ion secondary battery and an electrochemical capacitor using the same. | 10-09-2014 |
20140302396 | NANO SILICON-CARBON COMPOSITE MATERIAL AND PREPARATION METHOD THEREOF - The invention relates to a nano silicon-carbon composite negative material for lithium ion batteries and a preparation method thereof. A porous electrode composed of silica and carbon is taken as a raw material, and a nano silicon-carbon composite material of carbon-loaded nano silicon is formed by a molten salt electrolysis method in a manner of silica in-situ electrochemical reduction. Silicon and carbon of the material are connected by nano silicon carbide, and are metallurgical-grade combination, so that the electrochemical cycle stability of the nano silicon-carbon composite material is improved. The preparation method of the nano silicon-carbon composite material provided by the invention comprises the following steps: compounding a porous block composed of carbon and silica powder with a conductive cathode collector as a cathode; using graphite or an inert anode as an anode, and putting the cathode and anode into CaCl | 10-09-2014 |
20140308585 | SILICON-BASED ACTIVE MATERIALS FOR LITHIUM ION BATTERIES AND SYNTHESIS WITH SOLUTION PROCESSING - Silicon based anode active materials are described for use in lithium ion batteries. The silicon based materials are generally composites of nanoscale elemental silicon with stabilizing components that can comprise, for example, silicon oxide-carbon matrix material, inert metal coatings or combinations thereof. High surface area morphology can further contribute to the material stability when cycled in a lithium based battery. In general, the material synthesis involves a significant solution based processing step that can be designed to yield desired material properties as well as providing convenient and scalable processing. | 10-16-2014 |
20140308586 | Negative Electrode for Lithium Ion Rechargeable Battery and Manufacturing Method Thereof - The present invention relates to a negative electrode for lithium ion rechargeable battery and a manufacturing method thereof. The negative electrode comprises at least one vermicular graphite and at least one pitch, wherein the vermicular graphite is fabricated by way of thermally treating an expandable graphite powder, and the pitch is adsorbed in the pores of the vermicular graphite. In the present invention, the pitch adsorbed in the vermicular graphite would be carbonized and graphitized, such that a composite graphite having multi-layer flake graphite is formed, and the composite graphite is further pulverized to a composite graphite powder. Moreover, the manufacturing method of the present invention can be used for fabricating the negative electrode for lithium ion rechargeable battery under the conditions of reducing manufacturing cost and solvent usage, so as to protect the environment from the manufacturing process pollution. | 10-16-2014 |
20140315091 | SECONDARY BATTERY AND A METHOD FOR FABRICATING THE SAME - The adhesion between metal foil serving as a current collector and a negative electrode active material is increased to enable long-term reliability. An electrode active material layer (including a negative electrode active material or a positive electrode active material) is formed over a base, a metal film is formed over the electrode active material layer by sputtering, and then the base and the electrode active material layer are separated at the interface therebetween; thus, an electrode is formed. The electrode active material particles in contact with the metal film are bonded by being covered with the metal film formed by the sputtering. The electrode active material is used for at least one of a pair of electrodes (a negative electrode or a positive electrode) in a lithium-ion secondary battery. | 10-23-2014 |
20140322610 | LITHIUM ION BATTERIES USING DISCRETE CARBON NANOTUBES, METHODS FOR PRODUCTION THEREOF AND PRODUCTS OBTAINED THEREFROM - Compositions, and methods of obtaining them, useful for lithium ion batteries comprising discrete oxidized carbon nanotubes having attached to their surface lithium ion active materials in the form of nanometer sized crystals or layers. The composition can further comprise graphene or oxygenated graphene. | 10-30-2014 |
20140322611 | ANODE ACTIVE MATERIAL HAVING HIGH CAPACITY FOR LITHIUM SECONDARY BATTERY, PREPARATION THEREOF AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - The anode active material of the present invention comprises an amorphous SiO | 10-30-2014 |
20140329150 | COMPOSITE ANODE FOR LITHIUM ION BATTERIES - A composite anode for a lithium-ion battery is manufactured from silicon nanoparticles having diameters mostly under 10 nm; providing an oxide layer on the silicon nanoparticles; dispersing the silicon nanoparticles in a polar liquid; providing a graphene oxide suspension; mixing the polar liquid containing the dispersed silicone nanoparticles with the graphene oxide suspension to obtain a composite mixture; probe-sonicating the mixture for a predetermined time; filtering the composite mixture to obtain a solid composite; drying the composite; and reducing the composite to obtain graphene and silicon. | 11-06-2014 |
20140335418 | Battery having electrode with carbon current collector - The battery includes an electrode having an active medium on a current collector. The active medium includes one or more active materials. The current collector includes or consists of carbon nanotubes. The electrical conductivity and weight of carbon nanotubes permit the weight of the battery to be reduced while the energy density and the power density of the battery are increased. | 11-13-2014 |
20140335419 | COMPOSITE PARTICLES, MANUFACTURING METHOD THEREOF, ELECTRODE MATERIAL FOR SECONDARY BATTERY, AND SECONDARY BATTERY - Provided is positive electrode material for a highly safe lithium-ion secondary battery that can charge and discharge a large current while having long service life. Disclosed are composite particles comprising: at least one carbon material selected from the group consisting of (i) fibrous carbon material, (ii) chain-like carbon material, and (iii) carbon material produced by linking together fibrous carbon material and chain-like carbon material; and lithium-containing phosphate, wherein at least one fine pore originating from the at least one carbon material opens to outside the composite particle. Preferably, the composite particles are coated with carbon. The fibrous carbon material is preferably a carbon nanotube with an average fiber size of 5 to 200 nm. The chain-like carbon material is preferably carbon black produced by linking, like a chain, primary particles with an average particle size of 10 to 100 nm. | 11-13-2014 |
20140335420 | NEGATIVE-ELECTRODE MATERIAL FOR RECHARGEABLE BATTERIES WITH NONAQUEOUS ELECTROLYTE, AND PROCESS FOR PRODUCING THE SAME - There is provided a negative-electrode material for rechargeable batteries with a nonaqueous electrolyte which have a high charge/discharge capacity and excellent rate characteristics. The negative-electrode material for rechargeable batteries with a nonaqueous electrolyte comprises: carbon material having a carbon atom content of not less than 98.0% in terms of mass and a lattice spacing (d | 11-13-2014 |
20140342235 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD FOR PREPARING SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Disclosed are a negative active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same. The negative active material includes a composite particle including a silicon particle and a carbon coating layer coated on the surface of the silicon particle and a porous space formed by the entangled carbon nanofibers, the composite particle contacting the external surface of the carbon nanofibers in the porous space of the carbon nanofiber structure, and the carbon nanofibers have a larger diameter than that of the composite particle and a diameter ranging from about 100 nm to about 2000 nm. | 11-20-2014 |
20140349191 | ELECTRODE MATERIAL COMPRISING GRAPHENE-COMPOSITE MATERIALS IN A GRAPHITE NETWORK - A durable electrode material suitable for use in Li ion batteries is provided. The material is comprised of a continuous network of graphite regions integrated with, and in good electrical contact with a composite comprising graphene sheets and an electrically active material, such as silicon, wherein the electrically active material is dispersed between, and supported by, the graphene sheets. | 11-27-2014 |
20140356726 | HOLLOW SILICON-BASED PARTICLE, PREPARATION METHOD THEREOF AND ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY INCLUDING THE SAME - A hollow silicon-based particle including silicon (Si) or silicon oxide (SiO | 12-04-2014 |
20140370391 | SECONDARY BATTERY AND ELECTRODE FOR SECONDARY BATTERY - A secondary battery includes a positive electrode and a negative electrode. The negative electrode includes first particles made of metal and second particles made of a silicon containing substance. The first particles are in contact with the second particles. | 12-18-2014 |
20140370392 | SECONDARY BATTERY AND ELECTRODE FOR SECONDARY BATTERY - A secondary battery includes a positive electrode and a negative electrode. The negative electrode includes a layered material with an interlayer distance of 10 nm to 500 nm and interlayer particles with a diameter of smaller than 1 μm arranged among layers of the layered material. | 12-18-2014 |
20140370393 | ENERGY STORAGE DEVICE AND ENERGY STORAGE MODULE - Provided is an energy storage device provided with a negative electrode including a negative substrate having a surface, and a negative composite layer formed on the surface of the negative substrate and including a negative active material; a positive electrode including a positive substrate, and a positive composite layer formed on the positive substrate and including a positive active material; and a separator placed between the positive electrode and the negative electrode. 10% cumulative diameter D10 in the particle size distribution of the negative active material on a volume basis is 1.3 μm or more, and 90% cumulative diameter D90 in the particle size distribution of the negative active material on a volume basis is 8.9 μm or less. The surface of the negative substrate has a center line roughness Ra of 0.205 μm or more and 0.781 μm or less, and has a center line roughness Ra to a ten-point mean height Rz of 0.072 or more and 0.100 or less. | 12-18-2014 |
20140370394 | METHOD FOR PRODUCING COATED ACTIVE MATERIALS, CORE, BATTERY AND METHOD FOR PRODUCING BATTERIES USING THE MATERIALS - A method for producing coated active materials includes aqueously coating surfaces of the active materials and subsequently carbonizing the coated particles. A core, a battery and a method for using the materials for batteries are also provided. | 12-18-2014 |
20150010825 | GRAPHENE COMPOSITE MATERIAL, METHODS FOR MAKING GRAPHENE AND GRAPHENE COMPOSITE MATERIAL, AND LITHIUM SULFUR BATTERY USING THE SAME - A method for making graphene-based material is disclosed. A graphene oxide dispersion includes graphene oxide dispersed in solvent. A hydrogen sulfide gas is introduced to the graphene oxide dispersion at a reacting temperature to achieve a graphene dispersion. The hydrogen sulfide reduces graphene oxide into graphene, and elemental sulfur produced from the hydrogen sulfide is deposited on surfaces of the graphene. The solvent is removed to achieve a graphene composite material. Further, a graphene composite material and a lithium sulfur battery using the graphene composite material are also disclosed. | 01-08-2015 |
20150017541 | POWER STORAGE DEVICE - A power storage device which has high charge/discharge capacity and less deterioration in battery characteristics due to charge/discharge and can perform charge/discharge at high speed is provided. A power storage device includes a negative electrode. The negative electrode includes a current collector and an active material layer provided over the current collector. The active material layer includes a plurality of protrusions protruding from the current collector and a graphene provided over the plurality of protrusions. Axes of the plurality of protrusions are oriented in the same direction. A common portion may be provided between the current collector and the plurality of protrusions. | 01-15-2015 |
20150024275 | POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, AND POSITIVE ELECTRODE AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - A positive active material for a rechargeable lithium battery includes a porous material including primary particles, and secondary particles including aggregates of a plurality of the primary particles. The porous material has a tap density of 0.3 to less than 1.0 g/cc. A positive electrode includes the positive active material. A rechargeable lithium battery includes the positive electrode including the positive active material. | 01-22-2015 |
20150024276 | MESOPOROUS SILICON/CARBON COMPOSITE FOR USE AS LITHIUM ION BATTERY ANODE MATERIAL AND PROCESS OF PREPARING THE SAME - A silicon/carbon composite comprises mesoporous silicon particles and carbon coating provided on the silicon particles, wherein the silicon particles have two pore size distribution of 2-4 nm and 20-40 nm. A process of preparing the silicon/carbon composite comprises the steps of preparing mesoporous silicon particles via a mechanochemical reaction between SiCl | 01-22-2015 |
20150024277 | CARBONACEOUS MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - An object of the present invention is to provide a carbonaceous material for a non-aqueous electrolyte secondary battery having excellent output characteristics and exhibiting excellent cycle characteristics, and a negative electrode using the same. | 01-22-2015 |
20150030931 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING NEGATIVE ELECTRODE FOR SECONDARY BATTERY - The non-aqueous electrolyte secondary battery | 01-29-2015 |
20150037680 | COMPOSITE CATHODE ACTIVE MATERIAL, LITHIUM BATTERY INCLUDING THE SAME, AND PREPARATION METHOD THEREOF - A composite cathode active material including: a composite oxide capable of intercalation and deintercalation of lithium; a carbon nanostructure; and a material which is chemically inert to lithium. | 02-05-2015 |
20150037681 | NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND BATTERY PACK - A negative electrode active material for a nonaqueous electrolyte secondary battery of an embodiment includes a carbonaceous material, a silicon oxide phase in the carbonaceous material, and a silicon phase in the silicon oxide phase. The negative electrode active material has a crack in the carbonaceous material, and the longest side of the crack has a length equal to or greater than ⅕ of the diameter of the negative electrode active material. | 02-05-2015 |
20150044570 | SILICON SLURRY FOR ANODE ACTIVE MATERIALS AND CARBON-SILICON COMPLEX - Silicon slurry for anode active materials of secondary batteries is provided. The silicon slurry includes silicon particles and a dispersion medium. The silicon slurry satisfies dispersion conditions of 1≦D90/D50≦2.5 and 2 nm02-12-2015 | |
20150044571 | COMPOSITION OF SI/C ELECTRO ACTIVE MATERIAL - A composition comprising a first particulate electroactive material, a particulate graphite material and a binder, wherein at least 50% of the total volume of each said particulate materials is made up of particles having a particle size D | 02-12-2015 |
20150064564 | COMPOSITE MATERIAL FOR A LITHIUM ION BATTERY ANODE AND A METHOD OF PRODUCING THE SAME - A composite material for a lithium ion battery anode and a method of producing the same is disclosed, wherein the composite material comprises a porous electrode composite material. Pores with carbon-based material forming at the pore wall are created in situ. The porous electrode composite material provide space to accommodate volumetric changes during battery charging and discharging while the carbon-based material improved the conductivity of the electrode composite material. The method creates pores to have a denser carbon content inside the pores and a wider mouth of the pores to enhance lithium ion distribution. | 03-05-2015 |
20150064565 | GRAPHENE AND POWER STORAGE DEVICE, AND MANUFACTURING METHOD THEREOF - The formation method of graphene includes the steps of forming a layer including graphene oxide over a first conductive layer; and supplying a potential at which the reduction reaction of the graphene oxide occurs to the first conductive layer in an electrolyte where the first conductive layer as a working electrode and a second conductive layer with a as a counter electrode are immersed. A manufacturing method of a power storage device including at least a positive electrode, a negative electrode, an electrolyte, and a separator includes a step of forming graphene for an active material layer of one of or both the positive electrode and the negative electrode by the formation method. | 03-05-2015 |
20150072240 | POROUS SILICON-BASED PARTICLES, METHOD OF PREPARING THE SAME, AND LITHIUM SECONDARY BATTERY INCLUDING THE POROUS SILICON-BASED PARTICLES - Provided are a porous silicon-based particle including a silicon (Si) or SiO | 03-12-2015 |
20150079477 | SURFACE-MODIFIED LOW SURFACE AREA GRAPHITE, PROCESSES FOR MAKING IT, AND APPLICATIONS OF THE SAME - Surface-modified, low surface area synthetic graphite may have a BET surface from 1.0 to 4.0 m | 03-19-2015 |
20150086873 | NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND BATTERY PACK - A negative electrode for nonaqueous electrolyte secondary battery of an embodiment includes a current collector, and a negative electrode mixture layer arranged on the current collector. The negative electrode mixture layer includes a negative electrode active material, a conductive material, and a binder. The negative electrode active material is composite particles including a carbonaceous substance, a silicon oxide phase in the carbonaceous substance, and a silicon phase including crystalline silicon in the silicon oxide phase. The negative electrode active material satisfies d | 03-26-2015 |
20150093648 | COMPOSITE, CARBON COMPOSITE INCLUDING THE COMPOSITE, ELECTRODE, LITHIUM BATTERY, ELECTROLUMINESCENT DEVICE, BIOSENSOR, SEMICONDUCTOR DEVICE, AND THERMOELECTRIC DEVICE INCLUDING THE COMPOSITE AND/OR THE CARBON COMPOSITE - A composite including: silicon (Si); a silicon oxide of the formula SiOx, wherein 004-02-2015 | |
20150099184 | Lithium-ion Battery Anode Including Core-Shell Heterostructure of Silicon Coated Vertically Aligned Carbon Nanofibers - A novel hybrid lithium-ion anode material based on coaxially coated Si shells on carbon nanofibers (CNF). The unique cup-stacking graphitic microstructure makes the CNFs an effective Li | 04-09-2015 |
20150099185 | LITHIUM ION BATTERIES COMPRISING NANOFIBERS - Lithium ion batteries, electrodes, nanofibers, and methods for producing same are disclosed herein. Provided herein are batteries having (a) increased energy density; (b) decreased pulverization (structural disruption due to volume expansion during lithiation/de-lithiation processes); and/or (c) increased lifetime. In some embodiments described herein, using high throughput, water-based electrospinning process produces nanofibers of high energy capacity materials (e.g., ceramic) with nanostructures such as discrete crystal domains, mesopores, hollow cores, and the like; and such nanofibers providing reduced pulverization and increased charging rates when they are used in anodic or cathodic materials. | 04-09-2015 |
20150099186 | SILICON NANOCOMPOSITE NANOFIBERS - Provided herein are silicon nanocomposite nanofibers and processes for preparing the same. In specific examples, provided herein are nanocomposite nanofibers comprising continuous silicon matrices and nanocomposite nanofibers comprising non-aggregated silicon domains. | 04-09-2015 |
20150099187 | LARGE-VOLUME-CHANGE LITHIUM BATTERY ELECTRODES - A battery electrode material includes: 1) primary particles formed of an electrochemically active material; and 2) a secondary particle defining multiple, discrete internal volumes, wherein the primary particles are disposed within respective ones of the internal volumes. | 04-09-2015 |
20150104711 | NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE SLURRY FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY - A negative electrode for a lithium ion secondary battery according to the present invention includes a negative electrode active material and a binder, in which the negative electrode active material satisfies the following requirements (A), (B), and (C): | 04-16-2015 |
20150104712 | REINFORCED CURRENT COLLECTING SUBSTRATE ASSEMBLIES FOR ELECTROCHEMICAL CELLS - Provided is a current collecting assembly for use in an electrochemical cell. In some embodiments, the current collecting assembly comprises a current collecting substrate having a first side defining a first surface, and a second side defining a second surface. Each of the first and second surfaces defines a surface area. The current collecting assembly further comprises a first assembly of reinforcing structures disposed on and attached to the first side of the current collecting substrate. The current collecting substrate comprises a conductive material. The first assembly of reinforcing structures comprises a first set of reinforcing structures. The first set of reinforcing structures comprises a first polymer material. The first assembly of reinforcing structures mechanically reinforces the current collecting substrate. | 04-16-2015 |
20150111107 | ELECTRODE AND SECONDARY BATTERY, AND MANUFACTURING METHOD THEREOF - To improve the adhesion between a current collector and an electrode active material so as to improve long-term reliability. An electrode is formed in the following manner: an electrode active material (a negative electrode active material or a positive electrode active material) is formed over a base, a conductive film is formed over the electrode active material by a sputtering method, the base and the electrode active material are separated at the interface therebetween, and the electrode active material is made in contact with a current collector. The conductive film has a surface with projections and depressions because the conductive film is formed on the electrode active material containing particles. Accordingly, moderate adhesion can be provided between the conductive film and the current collector, with which stress at the interface between the conductive film and the current collector can be reduced while conductivity is maintained. | 04-23-2015 |
20150118567 | SILICON CARBON COMPOSITE CATHODE MATERIAL AND PREPARATION METHOD THEREOF, AND LITHIUM-ION BATTERY - A silicon carbon composite cathode material includes a graphite particle, further includes a silicon or silicon-containing particle, and includes a porous carbon layer, where the silicon or silicon-containing particle is distributed in vicinity of the graphite particle, the porous carbon layer coats a surface of the graphite particle and the silicon or silicon-containing particle so as to combine the graphite particle and the silicon or silicon-containing particle together, the porous carbon layer is a low crystalline carbon layer or an amorphous carbon layer, an interlayer distance d(002) of the low crystalline carbon layer is ≧3.45 nm, and a size of the silicon or silicon-containing particle is smaller than a size of the graphite particle. The silicon carbon composite cathode material has a porous structure, a stable material structure, a high capacity, high conductivity performance, and good cycling performance. | 04-30-2015 |
20150125754 | Method of Making Silicon Anode Material for Rechargeable Cells - There is provided a method of forming silicon anode material for rechargeable cells. The method includes providing a metal matrix, comprising no more than 30 wt % silicon, including silicon structures dispersed therein. The method further includes at least partially etching the metal matrix to at least partially isolate the silicon structures. | 05-07-2015 |
20150132654 | METHOD OF PREPARING GRAPHENE AND ANODE MIXTURE FOR LITHIUM SECONDARY BATTERY INCLUDING GRAPHENE PREPARED THEREBY - Disclosed herein is a method of preparing porous graphene from porous graphite, including 1) thermochemically reacting a highly crystalline carbide compound with a halogen element-containing gas to give a porous carbide-derived carbon; 2) treating the carbide-derived carbon with an acid, thus preparing a carbide-derived carbon oxide; and 3) reducing the carbide-derived carbon oxide. An anode mixture for a secondary battery including the graphene and an anode for a secondary battery including the anode mixture are also provided. | 05-14-2015 |
20150140436 | METHOD OF MANUFACTURING AN ELECTRODE, CORRESPONDING ELECTRODE AND BATTERY COMPRISING SUCH AN ELECTRODE - A method of manufacturing an electrode, including: a) depositing catalytic growth seeds on an electrically conducting support by aerosol spraying, b) growth of oriented carbon nanotubes on the basis of the deposition of the catalytic growth seeds, c) a deposition of sulphur on the oriented carbon nanotubes formed in b), and d) a deposition of a layer of carbon on the sulphur. An electrode, as well as to a battery including such an electrode, includes an electrically conducting support and oriented carbon nanotubes disposed on the surface of the electrically conducting support and covered at least partly by sulphur, the oriented carbon nanotubes exhibiting a length of greater than 20 μm, or greater than 50 μm. | 05-21-2015 |
20150295232 | NEGATIVE ELECTRODE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, LITHIUM-ION SECONDARY BATTERY, AND METHOD OF PRODUCING NEGATIVE ELECTRODE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY - The present invention provides a negative electrode material for a lithium-ion secondary battery, the negative electrode material comprising silicon active material particles containing silicon and nitrogen, the silicon active material particles being capable of occluding and emitting lithium ions, wherein an amount of the nitrogen contained in each silicon active material particle is in the range from 100 ppm to 50,000 ppm, a negative electrode and lithium-ion secondary battery using the material, and a method of producing the material. The negative electrode material is suitable for a lithium-ion secondary battery negative electrode that has high first charge and discharge efficiency and excellent cycle performance and makes the best use of high battery capacity and low volume expansion rate of a silicon material such as a silicon oxide material. | 10-15-2015 |
20150295240 | ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY - The present invention provides positive and negative electrodes, for a lithium secondary battery, allowing a battery to be quickly and fully charged in a very short period of time, for example, within one minute and allowing the battery to be used for vehicles at low temperatures. An organic electrolytic solution is permeated into an electrode group formed by winding positive and negative electrodes or by laminating the positive and negative electrodes one upon another with a separator being interposed therebetween to repeatingly occlude and release lithium ions. The positive electrode active substance and the negative electrode active substance have at least one phase selected from among a graphene phase and an amorphous phase as a surface layer thereof. An activated carbon layer is formed on a surface of the positive electrode active substance and that of the negative electrode active substance. An activated carbon layer having a specific surface area not less than 1000 m | 10-15-2015 |
20150303451 | NEGATIVE ELECTRODE FOR ELECTRIC DEVICE AND ELECTRIC DEVICE USING THE SAME - The negative electrode for an electric device includes: a current collector; and an electrode layer containing a negative electrode active material, an electrically-conductive auxiliary agent and a binder and formed on a surface of the current collector. The negative electrode active material is a mixture of a carbon material and an alloy represented by the following formula (1): Si | 10-22-2015 |
20150303460 | METHOD FOR PRODUCING NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION BATTERIES - A negative electrode material for use in a lithium-ion battery is obtained by a method comprising subjecting a carbon particle (B) comprising a graphite material or the like to surface treatment with an oxidizing agent and then removing a residue of the oxidizing agent, modifying the carbon particle (B) from which the residue of the oxidizing agent has been removed with a silane coupling agent, modifying a particle (A) comprising an element capable of occluding and releasing a lithium ion, such as a Si particle, with a silane coupling agent, linking the modified carbon particle (B) and the modified particle (A) via a chemical bond, and coating a composite particle comprising the particle (A) and the carbon particle (B) linked to the particle (A) via a chemical bond with carbon. | 10-22-2015 |
20150303469 | COMPOSITE MATERIAL COMPRISING NANO-OBJECTS, IN PARTICULAR CARBON NANO-OBJECTS, PROCESS FOR PREPARING SAME, AND INK AND ELECTRODE COMPRISING THIS MATERIAL - A nanocomposite material comprising nano-objects made of at least one first electron conducting material, such as carbon, and nano-objects or submicron objects made of at least one second material, such as silicon, different from the first material; said nanocomposite material comprising nanostructures each consisting of a three-dimensional network consisting of the nano-objects made of at least one first electron conducting material bound and maintained by a polysaccharide, the nano-objects or the submicron objects made of at least one second material different from the first material being self-assembled around said network and being attached to the nano-objects made of at least one first electron conducting material by said polysaccharide and said nanostructures being homogenously distributed in the material. | 10-22-2015 |
20150303512 | NONAQUEOUS ELECTROLYTIC STORAGE ELEMENT - To provide a nonaqueous electrolytic storage element, which contains: a positive electrode, which contains a positive electrode material layer including a positive electrode active material capable of reversibly accumulating and releasing anions; a negative electrode, which contains a negative electrode material layer including a negative electrode active material capable of reversibly accumulating and releasing cations; a separator provided between the positive electrode and the negative electrode; and a nonaqueous electrolyte containing an electrolyte salt, wherein a pore volume of the negative electrode material layer per unit area of the negative electrode is larger than a pore volume of the positive electrode material layer per unit area of the positive electrode. | 10-22-2015 |
20150311507 | COMPOSITE ACTIVE MATERIAL, SOLID STATE BATTERY AND METHOD FOR PRODUCING COMPOSITE ACTIVE MATERIAL - The problem to be solved by the present invention is to provide a composite active material having favorable electron conductivity. The present invention solves the problem by providing a composite active material comprising an active material, a coat layer with an average thickness of less than 100 nm, formed on a surface of the active material and composed of an ion conductive oxide, and carbon particles penetrating the coat layer, formed on a surface of the active material. | 10-29-2015 |
20150311513 | NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES, AND METHOD FOR EVALUATING SAME - There is provided a negative electrode material for lithium ion secondary batteries having a structure in which in charged and discharged states, a Li | 10-29-2015 |
20150311526 | NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY CELL AND METHOD FOR MANUFACTURING SAME - A negative electrode for a lithium-ion secondary cell is configured in a novel manner, having a charge-discharge capacity, as determined per unit weight of the carbon used in the electrode, that is markedly higher than the theoretical capacity of graphite, and having a surface that is stabilized against repeated charging and discharging. A negative electrode for a lithium-ion secondary cell in which a carbon layer obtained by building up and growing a graphene sheet is formed on the surface of a substrate comprising an iron-based metal, the carbon layer being formed in a diagonal direction in relation to the substrate, and the carbon layer being used as the surface of the negative electrode. As measured using an argon laser having a wavelength of 532 nm, the Raman spectrum of the graphite that constitutes the carbon nanochip layer has a g/d ratio of 0.30-0.80. | 10-29-2015 |
20150318542 | ACTIVE MATERIAL, METHOD OF MANUFACTURING ACTIVE MATERIAL, ELECTRODE, AND SECONDARY BATTERY - A secondary battery includes a cathode, an anode including an active material, and non-aqueous electrolytic solution. The active material includes a center portion and a covering portion provided on part or all of the center portion. The center portion includes silicon, tin, or both as constituent elements. The covering portion includes a plurality of fibrous carbon materials. Part or all of the fibrous carbon materials extend in a direction along a surface of the center portion and are closely attached to the center portion. | 11-05-2015 |
20150318544 | METHOD FOR FORMING A REDUCED GRAPHENE OXIDE/METAL SULFIDE COMPOSITE AND ITS USE AS AN ANODE FOR BATTERIES - The invention relates to anode materials suitable for use in batteries, such as lithium ion batteries and sodium ion batteries. In particular, the anode material is a reduced graphene oxide/metal sulfide composite. Methods for forming the reduced graphene oxide/metal sulfide composite are also disclosed. | 11-05-2015 |
20150349331 | ELECTRODE MATERIAL FOR SECONDARY BATTERIES AND MANUFACTURING METHOD THEREOF, AND SECONDARY BATTERY - Provided is an electrode material for secondary batteries, including a porous carbon material being derived from a plant and having an average particle size of less than 4 μm. | 12-03-2015 |
20150349335 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - A negative active material for a rechargeable lithium battery includes a composite carbon particle including a core particle including crystalline-based carbon and a coating layer positioned on the surface of the core particle and including amorphous carbon. A peak intensity (I | 12-03-2015 |
20150357637 | COMPOSITE MATERIAL FOR ELECTRODES, METHOD FOR PRODUCING SAME, AND SECONDARY BATTERY - The present invention relates to a composite material for electrodes, which contains a plant-derived porous carbon material having a pore volume according to an MP method of 0.1 cm | 12-10-2015 |
20150372292 | NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING NEGATIVE ELECTRODE ACTIVE MATERIAL, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING NEGATIVE ELECTRODE - In nonaqueous electrolyte secondary batteries that use silicon oxide as a negative electrode active material, the cycle characteristics are improved. A negative electrode active material ( | 12-24-2015 |
20150372294 | NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING NEGATIVE ELECTRODE ACTIVE MATERIAL, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING NEGATIVE ELECTRODE - In nonaqueous electrolyte secondary batteries that use silicon or silicon oxide as a negative electrode active material, the initial charge-discharge efficiency and the cycle characteristics are improved. A negative electrode active material particle ( | 12-24-2015 |
20150372295 | METAL TIN-CARBON COMPOSITES, METHOD FOR PRODUCING SAID COMPOSITES, ANODE ACTIVE MATERIAL FOR NON-AQUEOUS LITHIUM SECONDARY BATTERIES WHICH IS PRODUCED USING SAID COMPOSITES, ANODE FOR NON-AQUEOUS LITHIUM SECONDARY BATTERIES WHICH COMPRISES SAID ANODE ACTIVE MATERIAL, AND NON-AQUEOUS LITHIUM SECONDARY BATTERY - A metal tin-carbon composite having excellent properties required for various use applications, a method for producing the composite at low cost and in a simple manner, and use applications of a non-aqueous lithium secondary battery produced using the composite are provided. A metal tin-carbon composite comprising metal tin nanoparticles (B) contained in a sheet-like matrix (A) composed of carbon, wherein the metal tin-carbon composite contains the metal tin nanoparticle (B) having a particle size of a range of 0.2 nm to 5 nm and does not contain a coarse metal tin particle having a particle size of 1 μm or more, a preferable method for producing the composite using a specific precursor, an anode active material for a non-aqueous lithium secondary battery comprising the composite, a negative electrode for non-aqueous lithium secondary battery using the anode active material, and a non-aqueous lithium secondary battery. | 12-24-2015 |
20150380725 | ELECTRODE MATERIAL, PASTE FOR ELECTRODES, AND LITHIUM ION BATTERY - An electrode material in which an electrode active material having a carbonaceous film formed on the surface is used and which is capable of suppressing a voltage drop when high-speed charge and discharge is carried out in a low-temperature environment is provided. | 12-31-2015 |
20160006019 | CARBON-SILICON COMPOSITE AND MANUFACTURING MEHTOD OF THE SAME - Disclosed herein are a manufacturing method of a carbon-silicon composite, comprising: (a) preparing a silicon-polymer matrix slurry comprising a silicon slurry, a monomer, and a cross-linking agent; (b) performing a heat treatment on the silicon-polymer matrix slurry to manufacture a silicon-polymer carbonized matrix; (c) pulverizing the silicon-polymer carbonized matrix to manufacture silicon-polymer carbonized particles; and (d) mixing the silicon-polymer carbonized particles with a first carbon raw material, and then performing a carbonization process, the carbon-silicon composite, an anode for a secondary battery manufactured by applying the carbon-silicon composite, and a secondary battery comprising the anode for a secondary battery. | 01-07-2016 |
20160006027 | ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD OF PREPARING THE SAME, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - Disclosed herein is a non-carbon-based anode active material for lithium secondary batteries, including: a core containing silicon (Si); and silicon nanoparticles formed on the surface of the core. The non-carbon-based anode active material is advantageus in that the increase in the volume expansion during charging-discharging can be prevented by the application of silicon nanoparticles, and in that SiOx(x<1.0) can be easily prepared. | 01-07-2016 |
20160013481 | ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND METHOD FOR PREPARING SAME | 01-14-2016 |
20160013484 | LITHIUM ION SECONDARY BATTERY | 01-14-2016 |
20160027934 | ELECTRODES COMPRISING NANOSTRUCTURED CARBON - An electrode includes a network of compressed interconnected nanostructured carbon particles such as carbon nanotubes. Some nanostructured carbon particles of the network are in electrical contact with adjacent nanostructured carbon particles. Electrodes may be used in various devices, such as capacitors, electric arc furnaces, batteries, etc. A method of producing an electrode includes confining a mass of nanostructured carbon particles and densifying the confined mass of nanostructured carbon particles to form a cohesive body with sufficient contacts between adjacent nanostructured carbon particles to provide an electrical path between at least two remote points of the cohesive body. The electrodes may be sintered to induce covalent bonding between the nanostructured carbon particles at contact points to further enhance the mechanical and electrical properties of the electrodes. | 01-28-2016 |
20160028069 | CATHODE OF LITHIUM-ION BATTERY - A cathode of lithium-ion battery includes a carbon fiber film. The carbon fiber film includes at least one carbon nanotube film including a number of carbon nanotubes joined end to end and extending along a same direction. Each of the number of carbon nanotubes is joined with a number of graphene sheets, and an angle is between each of the number of graphene sheets and the number of carbon nanotubes. | 01-28-2016 |
20160028084 | POROUS SILICON-BASED ANODE ACTIVE MATERIAL, METHOD FOR PREPARING THE SAME, AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Provided are a porous silicon-based anode active material including porous SiO | 01-28-2016 |
20160036035 | CARBON CONTAINING BINDERLESS ELECTRODE FORMATION - An anode or negative electrode having a material matrix of carbon, graphene and an active element such as silicon or tin is described. The electrode is fabricated from an electrode slurry that does not utilize an organic binder. The electrode slurry comprises a combination of silicon and graphene oxide suspensions that is applied to a surface of a substrate such as a current collector. The layer of electrode slurry is heat treated to ensure adhesion of the layer of active electrode material to the surface of the current collector. The electrode may be incorporated within a lithium ion electrochemical cell. | 02-04-2016 |
20160049639 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - In a nonaqueous electrolyte secondary battery using SiO | 02-18-2016 |
20160054253 | Carbon-Sulfur Based Core-Shell Materials Compositions, Methods, and Applications - A materials composition and a method for preparing the materials composition provide: (1) a core material comprising a reactive carbon material-sulfur material composite; surrounded by and chemically coupled with (2) a shell material comprising a reactive sheath material. The material composition is useful within electrodes within electrical components including but not limited to electrochemical gas cells, supercapacitors and batteries where enhanced cycling may be realized. | 02-25-2016 |
20160056452 | NEGATIVE ELECTRODE CARBON MATERIAL FOR LITHIUM SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME, AND NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY - There is provided a negative electrode carbon material for a lithium secondary battery, including a graphite-based material in which holes are formed in a graphene layer plane. | 02-25-2016 |
20160056455 | STRUCTURE EQUIPPED WITH AMORPHOUS CARBON FILM HAVING ELECTRICALLY CONDUCTIVE PART AND CONTAINING SILICON, AND METHOD FOR MANUFACTURING SAME - In a structure according to an embodiment, an electrically conductive part on an amorphous carbon film can be appropriately formed, and the region surrounding the electrically conductive part of the amorphous carbon film can have increased friction resistance and wear resistance. The structure includes a substrate and an amorphous carbon film containing Si formed on the substrate and irradiated with a laser beam to have an electrically conductive part modified to have electric conductivity. | 02-25-2016 |
20160056466 | NEGATIVE ELECTRODE CARBON MATERIAL FOR LITHIUM SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY - The present invention has an object to provide a negative electrode carbon material capable of providing a lithium secondary battery improved in the capacity characteristic, and a negative electrode for a lithium secondary battery and a lithium secondary battery using the negative electrode carbon material. The negative electrode carbon material for a lithium secondary battery according to the present invention comprises an oxidized amorphous carbon material comprising oxidized graphene layers. The oxidized amorphous carbon material can be obtained by subjecting an amorphous carbon to an oxidation treatment so that graphene layers of carbon crystallites contained in the amorphous carbon are oxidized. | 02-25-2016 |
20160060125 | ELECTRODE MATERIAL, ELECTRODE AND ELECTRICAL STORAGE DEVICE - The present invention relates to an electrode material, an electrode, an electrical storage device and a lithium-ion capacitor, and the electrode material includes a carbon material and reduces its weight at a temperature not more than 650° C. by 20% relative to the weight thereof before heating when thermogravimetric analysis is performed on the electrode material with a heating rate of 5° C./min in an air flow at a rate of 100 ml/min. | 03-03-2016 |
20160064726 | STORAGE BATTERY ELECTRODE, MANUFACTURING METHOD THEREOF, STORAGE BATTERY, ELECTRONIC DEVICE, AND GRAPHENE - To provide graphene oxide that has high dispersibility and is easily reduced. To provide graphene with high electron conductivity. To provide a storage battery electrode including an active material layer with high electric conductivity and a manufacturing method thereof. To provide a storage battery with increased discharge capacity. A method for manufacturing a storage battery electrode that is to be provided includes a step of dispersing graphene oxide into a solution containing alcohol or acid, a step of heating the graphene oxide dispersed into the solution, and a step or reducing the graphene oxide. | 03-03-2016 |
20160064731 | CARBON-SILICON COMPOSITE AND MANUFACTURING METHOD THEREOF - Disclosed herein are a manufacturing method of a carbon-silicon composite, the manufacturing method including: (a) preparing a silicon-carbon-polymer matrix slurry including a silicon slurry, carbon particles, a monomer of polymer, and a cross-linking agent; (b) performing a heat treatment process on the silicon-carbon-polymer matrix slurry to manufacture a silicon-carbon-polymer carbonized matrix; (c) pulverizing the silicon-carbon-polymer carbonized matrix to manufacture a silicon-carbon-polymer carbonized matrix structure; and (d) mixing the silicon-carbon-polymer carbonized matrix structure with a first carbon raw material and performing a carbonization process to manufacture a carbon-silicon composite, the carbon-silicon composite, an anode for a secondary battery manufactured by applying the carbon-silicon composite, and a secondary battery including the anode for a secondary battery. | 03-03-2016 |
20160079591 | SiOx/Si/C Composite Material and Process of Producing thereof, and Anode for Lithium Ion Battery Comprising Said Composite Material - An SiOx/Si/C composite material, includes SiOx/Si composite particles and a carbon coating layer coated on the SiOx/Si composite particles. The SiOx/Si composite particles include nano-silicon crystallites embedded in an SiOx (003-17-2016 | |
20160087264 | NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY INCLUDING THE SAME - A negative electrode for a nonaqueous electrolyte secondary battery of the embodiment includes a current collector; and an electrode mixture layer that is formed on the current collector and contains a first particle, a second particle and a binder. The first particle is comprised of silicon, a silicon oxide and a carbonaceous material. The second particle has electron conductivity and an oxygen content of 1% or lower. The electrode mixture layer is characterized in that silicon concentrations in the vicinity of the surface having contact with the current collector and the vicinity of the opposite surface to the surface having contact with the current collector are higher than a silicon concentration at the central part in the thickness direction. | 03-24-2016 |
20160093886 | Lithium-sulfur cell and battery - A lithium-sulfur cell for a battery includes: a negative electrode; a positive electrode; and at least one diffusion barrier situated between the negative electrode and the positive electrode. At least one of the negative and positive electrodes includes a porous graphite foil made of expanded graphite, and the at least one diffusion barrier is composed of a brittle material having a thickness of ≧10 μm. At least two lithium-sulfur cells are provided in an interconnected arrangement in a battery. | 03-31-2016 |
20160104881 | TRAPPING DISSOLVED POLYSULFIDE FOR HIGH PERFORMANCE BATTERIES - An electrode having a first set of stripes of sulfur-containing materials forming electroactive regions and a second set of stripes of a material forming non-electroactive regions interdigitated with the first set of stripes. | 04-14-2016 |
20160104889 | NEGATIVE-ELECTRODE ACTIVE MATERIAL FOR SODIUM-ION SECONDARY BATTERY, METHOD FOR MANUFACTURING SAID NEGATIVE-ELECTRODE ACTIVE MATERIAL, AND SODIUM-ION SECONDARY BATTERY - A negative-electrode active material for a sodium-ion secondary battery contains a porous carbon material which has a plurality of open pores that extend through to the surface, a plurality of closed pores that do not extend through to the surface, and a solid portion made of carbon material. The distance between (002) planes of carbon in at least a part of the solid portion is 0.36 nm or more. The plurality of closed pores account for a volume ratio of not less than 30% and not more than 90% with respect to a total volume of the plurality of open pores, the plurality of closed pores, and the solid portion. | 04-14-2016 |
20160104892 | METHOD FOR MANUFACTURING STORAGE BATTERY ELECTRODE, STORAGE BATTERY ELECTRODE, STORAGE BATTERY, AND ELECTRONIC DEVICE - To provide a method for forming a storage battery electrode including an active material layer with high density in which the proportion of conductive additive is low and the proportion of the active material is high. To provide a storage battery having a higher capacity per unit volume of an electrode with the use of a storage battery electrode formed by the formation method. A method for forming a storage battery electrode includes the steps of forming a mixture including an active material, graphene oxide, and a binder; providing a mixture over a current collector; and immersing the mixture provided over the current collector in a polar solvent containing a reducer, so that the graphene oxide is reduced. | 04-14-2016 |
20160111723 | CONDUCTIVE FIBROUS MATERIALS - There is provided a conductive fibrous material comprising a plurality of carbonaceous fibers, wherein each carbonaceous fiber is fused to at least one other fiber. The carbonaceous fibers may be fused at fiber-to-fiber contact points by a polymer. The process of making the conductive fibrous material comprises mixing a phenolic polymer with a second polymer to form a polymer solution, preparing phenolic fibers having nano- or micro-scale diameters by electrospinning the polymer solution, and subsequent carbonization of the obtained phenolic fibers, thereby generating carbonaceous fibers, wherein each carbonaceous fiber is fused to at least one other fiber. The conductive fibrous material may be useful in electrode materials for energy storage devices. | 04-21-2016 |
20160111724 | NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY - A method for producing a negative electrode material for lithium ion secondary battery which includes: pressing a mixed liquid comprising particles (B) containing an element capable of occluding/releasing lithium ions, carbon nanotubes (C) of which not less than 95% by number have a fiber diameter of not less than 5 nm and not more than 40 nm, and water into a pulverizing nozzle of a high-pressure dispersing device to obtain a paste or slurry; drying the paste or slurry into a powder; and mixing the powder and carbon particles (A). A negative electrode material for lithium ion secondary battery including carbon particles (A); and flocculates in which particles (B) containing an element capable of occluding/releasing lithium ions and carbon nanotubes (C) of which not less than 95% by number has a fiber diameter of not less than 5 nm and not more than 40 nm are uniformly composited. | 04-21-2016 |
20160118647 | CARBONOUS COMPOSITE MATERIAL MADE WITH AND FROM PINE TREE NEEDLES AND ITS USE IN AN ENERGY CELL - 1. The specification relates to a carbonous composite particle made from pine tree needles or other natural leaves of composition CM for use in an energy cell. C is carbon, M is from a group of Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Mo, Pd, Ag, W, Al, N, C, B, O, F, Si, P, Cl, Ga, Sn, Li, Na, K, Mg, Ca, Sr. Energy cell is lithium ion or sodium ion or lithium sulfur or lithium air or rechargeable cell or primary cell or electrochemical cell or fuel cell or magnesium cell or solar cell or capacitor or super-capacitor or hybrid cells or alkaline cell or lead acid cell or metal hydride or nickel cadmium or combination of thereof. | 04-28-2016 |
20160118655 | NEGATIVE ELECTRODE ACTIVE MATERIAL AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHODS OF PRODUCING THE SAME - A negative electrode active material for use in a non-aqueous electrolyte secondary battery. The negative electrode active material is composed of a mixture of a silicon-contained material and a carbon material and capable of being doped with lithium and de-doped. Silicon contained in the silicon-contained material has a crystallite size of 10 nm or less. This crystallite size is calculated by a Scherrer method from a half width of a diffraction peak attributable to Si (220) in X-ray diffraction. This negative electrode active material can maintain a high usage rate of the silicon-contained material at the time of charging and discharging in a non-aqueous electrolyte secondary battery that uses the mixture of the silicon-contained material and the carbon material as the negative electrode active material. | 04-28-2016 |
20160126541 | SECONDARY BATTERY AND MANUFACTURING METHOD OF THE SAME - A negative electrode and a secondary battery including the negative electrode are provided. A plurality of projections and depressions are provided in a negative electrode active material layer and a negative electrode current collector. The plurality of projections and depressions in the negative electrode active material layer absorb expansion of the negative electrode active material and suppress deformation thereof. The plurality of projections and depressions in the negative electrode current collector suppress deformation of the negative electrode current collector caused by expansion and contraction of the negative electrode active material. | 05-05-2016 |
20160126550 | NEGATIVE-ELECTRODE ACTIVE MATERIAL FOR SODIUM-ION SECONDARY BATTERY, METHOD FOR MANUFACTURING SAID NEGATIVE-ELECTRODE ACTIVE MATERIAL, AND SODIUM-ION SECONDARY BATTERY - A negative-electrode active material for a sodium-ion secondary battery contains a porous carbon material which has a plurality of open pores that extend through to the surface, a plurality of closed pores that do not extend through to the surface, and a solid made of carbon material. The distance between (002) planes of the solid portion is not less than 0.340 nm and not more than 0.410 nm. The plurality of closed pores account for a volume ratio of not less than 0% and not more than 10% with respect to a total volume of the plurality of open pores, the plurality of closed pores, and the solid portion. The plurality of open pores account for a volume ratio of not less than 0% and not more than 50% with respect to a total volume of the plurality of open pores, the plurality of closed pores, and the solid portion. | 05-05-2016 |
20160133933 | POSITIVE ELECTRODE MIX FOR SECONDARY BATTERIES INCLUDING IRREVERSIBLE ADDITIVE - Disclosed is a positive electrode mix for secondary batteries including an irreversible additive. More particularly, provided is a positive electrode mix for secondary batteries including an irreversible additive that decreases irreversible efficiency of a positive electrode active material and a positive electrode. | 05-12-2016 |
20160141599 | ROTARY TUBULAR FURNACE, METHOD OF PRODUCING NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The invention provides a rotary tubular furnace including a rotatable furnace tube having an inlet end through which silicon compound particles (SiO | 05-19-2016 |
20160141600 | METHOD OF PRODUCING NEGATIVE ELECTRODE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND LITHIUM-ION SECONDARY BATTERY - The present invention is a method of producing a negative electrode material for a non-aqueous electrolyte secondary battery, including: preparing silicon-based negative electrode active material particles; and coating each of the prepared particles with a conductive carbon coating by using a rotary kiln while controlling the rotary kiln such that the following relationships (1) and (2) hold true: | 05-19-2016 |
20160141609 | ALUMINUM SILICATE COMPOSITE, ELECTROCONDUCTIVE MATERIAL, ELECTROCONDUCTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, COMPOSITION FOR FORMING NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, COMPOSITION FOR FORMING POSITIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, POSITIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY, COMPOSITION FOR FORMING POSITIVE - An aluminum silicate complex that comprises an aluminum silicate and carbon that is disposed on a surface of the aluminum silicate. | 05-19-2016 |
20160156025 | LITHIUM ION SECONDARY BATTERY AND MANUFACTURING METHOD OF THE LITHIUM ION SECONDARY BATTERY | 06-02-2016 |
20160156029 | NEGATIVE ELECTRODE FOR SODIUM MOLTEN SALT BATTERY, METHOD FOR PRODUCING SAME, AND SODIUM MOLTEN SALT BATTERY | 06-02-2016 |
20160156034 | ELECTROCHEMICAL HIGH RATE STORAGE MATERIALS, PROCESS, AND ELECTRODES | 06-02-2016 |
20160164073 | Porous Silicon Oxide (SiO) Anode Enabled by a Conductive Polymer Binder and Performance Enhancement by Stabilized Lithium Metal Power (SLMP) - The invention demonstrates that only 2% functional conductive polymer binder without any conductive additives was successfully used with a micron-size silicon monoxide (SiO) anode material, demonstrating stable and high gravimetric capacity (>1000 mAh/g) for ˜500 cycles and more than 90% capacity retention. Prelithiation of this anode using stabilized lithium metal powder (SLMP®) improves the first cycle Coulombic efficiency of a SiO/NMC full cell from ˜48% to ˜90%. This combination enables good capacity retention of more than 80% after 100 cycles at C/3 in a lithium-ion full cell. We also demonstrate the important connection between porosity and the loading of silicon electrodes. By employing a highly porous silicon electrode, a high areal capacity (3.3 mAh/cm | 06-09-2016 |
20160164079 | ADVANCED SI-C COMPOSITE ANODE ELECTRODE FOR HIGH ENERGY DENSITY AND LONGER CYCLE LIFE - An electrode has a first set of stripes of a graphite-containing material, and a second set of stripes of silicon-containing material interdigitated with the first set of stripes. A method of manufacturing an electrode includes extruding first and second materials simultaneously onto a substrate in interdigitated stripes, wherein the first material comprises a graphite-containing material and the second material comprises a silicon-containing material. | 06-09-2016 |
20160172664 | ELECTRODE MATERIAL AND METHOD FOR PRODUCING SAME | 06-16-2016 |
20160172670 | STRUCTURED PARTICLES | 06-16-2016 |
20160181612 | ANODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME | 06-23-2016 |
20160181613 | CARBONOUS ANODE MATERIAL, METHOD FOR PRODUCING THE SAME, AND LITHIUM-ION BATTERY CONTAINING THE ANODE MATERIAL | 06-23-2016 |
20160190552 | NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION BATTERIES AND USE THEREOF - The present invention relates to a negative electrode material for a lithium ion battery, made of a composite material comprising silicon-containing particles, artificial graphite particles and a carbon coating layer, wherein the silicon-containing particles are silicon particles having a SiOx layer (006-30-2016 | |
20160190554 | NEGATIVE ELECTRODE MATERIAL FOR USE IN NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD OF PRODUCING THE SAME, AND LITHIUM-ION SECONDARY BATTERY - A method of producing a negative electrode material for use in a non-aqueous electrolyte secondary battery, including: making base powder containing silicon; measuring a volume average particle diameter of this powder by particle size distribution with laser diffractometry; randomly sampling 5000 particles or more from the powder and measuring their roundness; selecting the powder if the volume average particle diameter ranges from 0.5 to 20 μm, the roundness of the sampled particles is 0.93 or more on average, and a ratio of the number of particles having a roundness of 0.85 or less is 5% or less; and coating the selected powder with carbon. A negative electrode material useful for a non-aqueous electrolyte secondary battery that has excellent cycle performance and makes the best use of advantages of a silicon-contained material, a method of producing this negative electrode material, and a lithium-ion secondary battery. | 06-30-2016 |
20160190572 | Negative Electrode Active Material for Non-Aqueous Electrolyte Rechargeable Battery, Method of Fabricating the Same, and Non-Aqueous Electrolyte Rechargeable Battery Including the Same - A camera module is disclosed, the camera module including a PCB (Printed Circuit Board), a base arranged at an upper surface of the PCB, a holder member arranged at an upper surface of the base and formed with a plurality of magnet reception portions, a surface of which facing the base is opened, and a plurality of magnets coupled to the magnet reception portions, wherein the base is formed with a protrusion configured to support a bottom surface of the magnet by being protrusively formed at a position corresponding to an opening of the magnet reception portions. | 06-30-2016 |
20160190598 | COPPER-COVERED STEEL FOIL, NEGATIVE ELECTRODE, AND BATTERY - A negative electrode collector using a copper-covered steel foil for carrying a negative electrode active material for lithium ion secondary batteries has a steel sheet as the core material thereof and has, on both surfaces thereof, a copper covering layer having a mean thickness t | 06-30-2016 |
20160197345 | COMPOSITE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES AND METHOD FOR PRODUCING SAME | 07-07-2016 |
20160204422 | BATTERY ANODE | 07-14-2016 |
20160204435 | NEGATIVE ELECTRODE MATERIAL, NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE AND ALKALI METAL ION BATTERY | 07-14-2016 |
20160254537 | NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD OF PRODUCING NEGATIVE ELECTRODE MATERIAL FOR A NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY | 09-01-2016 |
20160254543 | PYROLYTIC CARBON BLACK COMPOSITE AND METHOD OF MAKING THE SAME | 09-01-2016 |
20160380265 | SILICON-CARBON COMPOSITE MATERIAL INCLUDING LAYERED CARBON AND SILICON PARTICLES - A silicon-carbon composite material includes: layers of carbon material; and secondary particles of silicon held between the layers of the carbon material. Each of the secondary particles of silicon is an aggregate of primary particles of silicon. At least one of the primary particles of silicon has a diameter 3 nm or more. At least one of the secondary particles of silicon has a diameter of 50 nm or less. | 12-29-2016 |
20170233250 | LITHIUM SULFIDE-GRAPHENE OXIDE COMPOSITE MATERIAL FOR LI/S CELLS | 08-17-2017 |
20170237081 | A Method of forming a Graphene Oxide-Reduced Graphene Oxide Junction | 08-17-2017 |
20180026257 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME | 01-25-2018 |
20180026258 | METHOD FOR MAKING LITHIUM ION BATTERY ELECTRODE | 01-25-2018 |
20180026262 | NEGATIVE ACTIVE MATERIAL, LITHIUM BATTERY INCLUDING THE SAME, AND METHOD OF PREPARING THE NEGATIVE ACTIVE MATERIAL | 01-25-2018 |
20180026269 | LITHIUM ION BATTERY ELECTRODE | 01-25-2018 |
20190148712 | POSITIVE ELECTRODE FOR AIR BATTERY | 05-16-2019 |
20190148718 | ELECTRODES FOR METAL-ION BATTERIES | 05-16-2019 |
20220140341 | ELECTRODE AND ELECTROCHEMICAL MEASUREMENT SYSTEM - A carbon electrode includes a substrate, and a conductive carbon layer disposed at an upper side of the substrate and having an sp | 05-05-2022 |
20220140344 | PRIMARY CHEMICAL CURRENT SOURCE BASED ON GRAPHENE - The invention relates to the field of electrical engineering. The primary chemical current source is a new class of non-rechargeable, energy-saturated chemical current sources based on graphene in the metal-oxidized carbon electrochemical system, in which a nanostructured material based on graphene-like materials is used as a current-forming component of the cathode, which has an increased discharge capacity due to the presence of various oxygen-containing functions, capable of forming irreversible compounds with ions of the active material of the anode (for example, lithium, sodium, magnesium, calcium, potassium) during the current-forming process (discharge). The technical result is an increase in the energy performance of the primary chemical current source. | 05-05-2022 |