发明名称 |
CARBON-SUPPORTED CATALYST |
摘要 |
The present invention is to provide such a carbon-supported catalyst that an activity expected from a catalytic activity by rotating disk electrode (RDE) evaluation is maintained even after the formation of a membrane electrode assembly (MEA). Disclosed is a carbon-supported catalyst wherein the carbon-supported catalyst includes fine catalyst particles that have a palladium-containing particle and a platinum-containing outermost layer covering at least part of the palladium-containing particle, and a carbon support supporting the fine catalyst particles, and wherein, in a cyclic voltammogram that is obtained by measuring, in an acid solution, the carbon-supported catalyst applied to a measurement electrode made of an electroconductive material, the proportion of the area of a hydrogen adsorption region that appears in a reduction current region to the total area of the hydrogen adsorption region and a hydrogen occlusion region that appears in the reduction current region, is 29% to 36%. |
申请公布号 |
US2016344038(A1) |
申请公布日期 |
2016.11.24 |
申请号 |
US201515117532 |
申请日期 |
2015.01.06 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
KANEKO Keiichi;TAKEHIRO Naoki;TAKEUCHI Norimitsu |
分类号 |
H01M4/92;H01M4/86 |
主分类号 |
H01M4/92 |
代理机构 |
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代理人 |
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主权项 |
1. A carbon-supported catalyst,
wherein the carbon-supported catalyst comprises fine catalyst particles that have a palladium-containing particle and a platinum-containing outermost layer covering at least part of the palladium-containing particle, and a carbon support supporting the fine catalyst particles; wherein, in a cyclic voltammogram that is obtained by measuring, in an acid solution, the carbon-supported catalyst applied to a measurement electrode made of an electroconductive material, a proportion of an area of a hydrogen adsorption region that appears in a reduction current region to a total area of the hydrogen adsorption region and a hydrogen occlusion region that appears in the reduction current region, is 29% to 36%; and wherein the cyclic voltammogram is obtained by cyclic voltammetry under conditions that a sweep rate is 50 mV/s and the acid solution has a temperature of 25° C. and is a 0.1 M perchloric acid aqueous solution subjected to inert gas bubbling. |
地址 |
Toyota-shi, Aichi-ken JP |