Patent application number | Description | Published |
20100316930 | FUEL CELL HAVING A STABILIZED CATHODE CATALYST - A fuel cell ( | 12-16-2010 |
20110136046 | FUEL CELL CATALYST SUPPORT WITH FLUORIDE-DOPED METAL OXIDES/PHOSPHATES AND METHOD OF MANUFACTURING SAME - A fuel cell catalyst support includes a fluoride-doped metal oxide/phosphate support structure and a catalyst layer, supported on such fluoride-doped support structure. In one example, the support structure is a sub-stechiometric titanium oxide and/or indium-tin oxide (ITO) partially coated or mixed with a fluoride-doped metal oxide or metal phosphate. In another example, the support structure is fluoride-doped and mixed with at least one of low surface carbon, boron-doped diamond, carbides, borides, and silicides. | 06-09-2011 |
20110136047 | FUEL CELL CATALYST SUPPORT WITH BORON CARBIDE-COATED METAL OXIDES/PHOSPHATES AND METHOD OF MANUFACTURING SAME - A fuel cell catalyst support includes a support structure having a metal oxide and/or a metal phosphate coated with a layer of boron carbide. Example metal oxides include titanium oxide, zirconium oxide, tungsten oxide, tantalum oxide, niobium oxide and oxides of yttrium, molybdenum, indium, and tin and their phosphates. A boron carbide layer is arranged on the support structure by a chemical or mechanical process, for example. Finally, a catalyst layer is deposited on the boron carbide layer. | 06-09-2011 |
20110143934 | STABILIZED PLATINUM CATALYST - A stabilized platinum nanoparticle has a core portion surrounded by a plurality of outer surfaces. The outer surfaces include terrace regions formed of platinum atoms, and edge and corner regions formed of atoms from a second metal. The stabilized nanoparticle may be formed by combining a platinum nanoparticle with a metal salt in a solution. Ions of the second metal react with platinum and replace platinum atoms on the nanoparticle. Platinum atoms from the edge and corner regions react with the second metal ions quicker than surface atoms from the terraces, due to a greater difference in electrode potential between the platinum atoms at the edge and corner regions, as compared to the second metal in the solution. The platinum nanoparticle may include surface defects, such as steps and kinks, which may also be replaced with atoms of the second metal. In an exemplary embodiment, the platinum nanoparticle is a cathode catalyst in an electro-chemical cell. | 06-16-2011 |
20110275010 | CATALYTIC MATERIAL - A catalytic material includes a plurality of nanoparticles that each comprise a gold substrate and a catalyst on the gold substrate. The gold substrate includes surface facets of which a predominant amount are Au(100)-oriented crystal planes. | 11-10-2011 |
20110311904 | BORON-DOPED DIAMOND COATED CATALYST SUPPORT - A catalyst support for an electrochemical system includes a high surface area refractory material core structure and boron-doped diamond. The BDD modifies the high surface area refractory material core structure. | 12-22-2011 |
20120015284 | BORON-DOPED DIAMOND COATED CARBON CATALYST SUPPORT - A catalyst support for an electrochemical system includes a high surface area carbon core structure and a surface modifier modifying the surface of the carbon core structure. The surface modifier includes boron-doped diamond (BDD) and a high surface area refractory material. The high surface area refractory material includes metal oxides, metal phosphates, metal borides, metal nitrides, metal silicides, metal carbides and combinations thereof. | 01-19-2012 |
20120058417 | CARBIDE STABILIZED CATALYST STRUCTURES AND METHOD OF MAKING - A catalyst structure for an electrochemical cell includes a catalyst support structure, catalyst particles and an outer carbide film The catalyst particles are deposited on the catalyst support structure. The outer carbide film is formed on the catalyst support structure. The outer carbide film surrounds the catalyst particles. | 03-08-2012 |
20120190536 | SUPPORTED CATALYST - A supported catalyst is prepared by a process that includes establishing shell-removal conditions for a supported catalyst intermediate that includes capped nanoparticles of a catalyst material dispersed on a carbon support. The capped nanoparticles each include a platinum alloy core capped in an organic shell. The shell-removal conditions include an elevated temperature and an inert gas atmosphere that is substantially free of oxygen. The organic shell is removed from the platinum alloy core under the shell-removal conditions to limit thermal decomposition of the carbon support and thereby limit agglomeration of the catalyst material such that the supported catalyst includes an electrochemical surface area of at least 30 m | 07-26-2012 |
20120258854 | METHOD FOR TREATING A SUPPORTED CATALYST - A method for treating a supported catalyst includes establishing shell-removal conditions for a supported catalyst that includes nanoparticles of a catalyst material on a carbon support. The nanoparticles each include a platinum alloy core capped in an organic shell. The shell-removal conditions include an elevated temperature and an inert gas atmosphere that is substantially free of oxygen. The organic shell is then removed from the platinum alloy core in the shell-removal conditions. | 10-11-2012 |
20120329642 | PLATINUM-PALLADIUM CATALYST WITH INTERMEDIATE LAYER - A fuel cell catalyst comprises a support having a core arranged on the support. In one example, the core includes palladium nanoparticles. A layer, which is gold in one example, is arranged on the core. A platinum overlayer is arranged on the gold layer. The intermediate gold layer greatly increases the mass activity of the platinum compared to catalysts in which platinum is deposited directly onto the palladium without any intermediate gold layer. | 12-27-2012 |
20130011771 | SUPPORTED CATALYST - A supported catalyst includes a plurality of support particles that each include a carbon support and a layer disposed around the carbon support. The layer is selected from a metal carbide, metal oxycarbide, and combinations thereof. A catalytic material is disposed on the layers of the support particles. | 01-10-2013 |
20130324394 | METHOD OF FORMING A CATALYST WITH AN ATOMIC LAYER OF PLATINUM ATOMS - A method of forming a catalyst material includes hindering the reaction rate of a displacement reaction and controlling the formation of platinum clusters, where an atomic layer of metal atoms is displaced with platinum atoms, to produce a catalyst material that includes an atomic layer of the platinum atoms. | 12-05-2013 |
20130340915 | PLATINUM MONOLAYER FOR FUEL CELL - An example fuel cell electrode forming method includes covering at least a portion of a copper monolayer with a liquid platinum and replacing the copper monolayer to form a platinum monolayer from the liquid platinum. | 12-26-2013 |
20140080014 | POWER GENERATION METHOD USING A FUEL CELL HAVING A STABILIZED CATHODE CATALYST - A method of generating electrical power includes flowing hydrogen across an anode, splitting the hydrogen into protons and electrons using a catalyst attached to the anode, directing the electrons to a circuit to produce electrical power, flowing oxygen across a cathode, splitting the oxygen molecules into oxygen atoms using a cathode catalyst, passing the protons through an electrolyte to the cathode, and combining the protons with oxygen to form water. The cathode catalyst includes a plurality of nanoparticles having terraces formed of platinum, and corner regions and edge regions formed of a second metal. | 03-20-2014 |
20140155252 | METHOD OF MAKING - A method of forming a catalyst structure includes providing a catalyst support structure having a core and an inner carbide film on the core, depositing catalyst nanoparticles on the catalyst support structure, and forming an outer carbide film on the catalyst support structure after the step of depositing catalyst nanoparticles. The outer carbide film is preferentially formed on the catalyst support structure compared to the catalyst particles. | 06-05-2014 |