发明名称 |
CO-tolerant anode catalyst for PEM fuel cell and its method of manufacturing |
摘要 |
A supported platinum catalyst with good carbon monoxide poisoning resistance, for a polymer electrolyte membrane (PEM) fuel cell, comprises a finely divided conductive support material bearing platinum and ruthenium in highly dispersed unalloyed form, the crystallite size of the platinum being less than 2 nm and that of the ruthenium being less than 1 nm. Also claimed is production of the above catalyst by suspending the support material in water, adding aqueous Pt and/or Ru compound solutions, adjusting the pH to 7-9, depositing the Pt and/or Ru using a reducing agent, filtering off and washing the resulting catalyst, optionally depositing the other precious metal in the same way, and then drying at NOTGREATER 200 degrees C. Further claimed are a PEM fuel cell gas diffusion electrode, a catalyst-coated proton conductive polymer membrane for PEM fuel cells and a PEM fuel cell membrane-electrode unit with gas diffusion electrodes on both the cathode and anode sides of a proton conductive polymer membrane, in which the catalyst layer on the anode side comprises the above catalyst. |
申请公布号 |
EP0880188(A3) |
申请公布日期 |
2000.07.12 |
申请号 |
EP19980108689 |
申请日期 |
1998.05.13 |
申请人 |
DEGUSSA-HUELS AKTIENGESELLSCHAFT |
发明人 |
AUER, EMMANUEL, DR.;FREUND, ANDREAS, DR.;LEHMANN, THOMAS, DR.;STARZ, KARL-ANTON, DR.;SCHWARZ, ROBERT, DR.;STENKE, UDO, DR. |
分类号 |
H01M4/88;B01J23/46;H01M4/86;H01M4/92;H01M8/10 |
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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