发明名称 |
VOLTAGE CYCLING DURABLE CATALYSTS |
摘要 |
A fuel cell electrocatalyst layer having increased voltage cycling durability. The electrocatalyst layer comprises annealed platinum particles having an average particle size diameter from about 3 to about 15 nm deposited on a support structure. The platinum particles are annealed at a temperature from about 800 to about 1,400°C for a time period such that the surface area is reduced by about 20% as compared to the original surface area. In various embodiments, the electrocatalyst layer retains an electrochemical surface area that is greater than 50% of an original electrochemical surface area after about 15,000 voltage cycles in the range from about 0.6 to about 1.0 V. |
申请公布号 |
WO2007005081(A3) |
申请公布日期 |
2007.12.06 |
申请号 |
WO2006US11722 |
申请日期 |
2006.03.31 |
申请人 |
GENERAL MOTORS GLOBAL TECHNOLOGY OPERATIONS, INC. |
发明人 |
KOCHA, SHYAM;MAKHARIA, ROHIT;GASTEIGER, HUBERT, A. |
分类号 |
H01M4/92;B01J23/42;B01J37/08 |
主分类号 |
H01M4/92 |
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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