发明名称 |
Graphite Particle-Supported Pt and Pt Alloy Electrocatalyst with Controlled Exposure of Defined Crystal Faces for Oxygen Reduction Reaction (ORR) |
摘要 |
A method for forming an electrocatalyst for fuel cell applications comprises electrolessly depositing a first plurality of nickel particles onto carbon-support particles. The nickel particles are formed from a nickel ion-containing aqueous solution. At least a portion of the nickel particles are replaced with platinum via a galvanic displacement reaction to form a second plurality of nickel particles coated with a platinum layer. During this displacement reaction step, the nickel particles are heated to a temperature sufficient to form the platinum layer. Finally, the second plurality of nickel particles is optionally incorporated into a cathode layer of a fuel cell.
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申请公布号 |
US2012208693(A1) |
申请公布日期 |
2012.08.16 |
申请号 |
US201113027908 |
申请日期 |
2011.02.15 |
申请人 |
ZHANG JUNLIANG;YU ZHIQIANG;LIU ZHONGYI;GM GLOBAL TECHNOLOGY OPERATIONS LLC |
发明人 |
ZHANG JUNLIANG;YU ZHIQIANG;LIU ZHONGYI |
分类号 |
H01M4/88 |
主分类号 |
H01M4/88 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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