Carbon monoxide tolerant electrocatalyst with low platinum loading and a process for its preparation
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United States of America Patent
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Dec 30, 2003
Grant Date -
Sep 19, 2002
app pub date -
Mar 19, 2001
filing date -
Mar 19, 2001
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Abstract
An electrocatalyst is provided for use in a fuel cell that has low platinum loading and a high tolerance to carbon monoxide poisoning. The fuel cell anode includes an electrocatalyst that has a conductive support material, ruthenium nanoparticles reduced in H.sub.2 and a Group VIII noble metal in an amount of between about 0.1 and 25 wt % of the ruthenium nanoparticles, preferably between about 0.5 and 15 wt %. The preferred Group VIII noble metal is platinum. In one embodiment, the anode can also have a perfluorinated polymer membrane on its surface.
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