US Patent No: 7,704,918
Number of patents in Portfolio can not be more than 2000
Synthesis of metal-metal oxide catalysts and electrocatalysts using a metal cation adsorption/reduction and adatom replacement by more noble ones
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Apr 27, 2010
Issued date -
Jun 8, 2007
filing date -
11/760,051
serial no -
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Abstract
The invention relates to platinum-metal oxide composite particles and their use as electrocatalysts in oxygen-reducing cathodes and fuel cells. The invention particularly relates to methods for preventing the oxidation of the platinum electrocatalyst in the cathodes of fuel cells by use of these platinum-metal oxide composite particles. The invention additionally relates to methods for producing electrical energy by supplying such a fuel cell with an oxidant, such as oxygen, and a fuel source, such as hydrogen. The invention also relates to methods of making the metal-metal oxide composites.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 6,019,946 Catalytic structure | 18 | 1997 | |
| 6,559,094 Method for preparation of catalytic material for selective oxidation and catalyst members thereof | 29 | 1999 | |
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| 6,162,530 Nanostructured oxides and hydroxides and methods of synthesis therefor | 54 | 1997 | |
| 6,517,802 Methods of synthesis for nanostructured oxides and hydroxides | 26 | 2000 | |
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| 2009/0117,020 RAPID MICROWAVE-SOLVOTHERMAL SYNTHESIS AND SURFACE MODIFICATION OF NANOSTRUCTURED PHOSPHO-OLIVINE CATHODES FOR LITHIUM ION BATTERIES | 3 | 2008 | |
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| 6,183,894 Electrocatalyst for alcohol oxidation in fuel cells | 20 | 1999 | |
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| 6,346,182 Process of making bipolar electrodeposited catalysts and catalysts so made | 7 | 2000 | |
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| 4,232,097 Fuel cell oxygen electrode | 10 | 1979 | |
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| 2003/0224,162 Transparent conductive film, method for producing same and method for forming pattern | 6 | 2003 | |
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| 6,541,142 Fuel cell system having a methanol decomposition reactor | 12 | 2000 | |
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| 6,680,279 Nanostructured catalyst particle/catalyst carrier particle system | 25 | 2002 | |
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| 5,939,220 Catalyst | 39 | 1997 | |
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| 2004/0009,388 Electrocatalyst-containing layer | 3 | 2003 | |
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| 6,489,052 Fuel cell air purification subsystem | 20 | 1999 | |
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| 6,828,056 Electrode catalyst composition, electrode, and membrane electrode assembly for electrochemical cells | 5 | 2001 | |
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| 5,225,391 Electrocatalyst for anode | 58 | 1992 | |
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| 5,227,030 Electrocatalytic cathodes and methods of preparation | 5 | 1991 | |
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| 6,294,246 Multi-functional material with photocatalytic functions and method of manufacturing same | 8 | 1998 | |
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| 6,723,298 Method for catalytic conversion of carbon monoxide in a hydrogen-containing gas mixture | 22 | 2000 | |
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| 5,733,675 Electrochemical fuel cell generator having an internal and leak tight hydrocarbon fuel reformer | 76 | 1995 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
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