Co-tolerant anode catalyst for PEM fuel cells and a process for its preparation
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United States of America Patent
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Dec 28, 1999
Grant Date -
N/A
app pub date -
May 19, 1998
filing date -
May 21, 1997
priority date (Note) -
Expired
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Abstract
A platinum supported catalyst is disclosed for the anode in a PEM fuel cell with high resistance to poisoning by carbon monoxide. The catalyst contains the noble metals platinum and ruthenium on a finely divided, conductive support material. The two noble metals are not alloyed with each other and are present in highly dispersed form on the support material, wherein the crystallite size of the platinum is less than 2 nm and that of the ruthenium is less than 1 nm.
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