Electrocatalyst and fuel cell electrode using the same
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United States of America Patent
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Apr 18, 1989
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N/A
app pub date -
Dec 20, 1982
filing date -
Dec 20, 1982
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Expired
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Abstract
An improved electrocatalyst comprises a supported platinum-gallium alloy catalyst of up to 50 atomic percent gallium, preferably of 10 to 30 atomic percent gallium, balance platinum. The platinum-gallium alloy is supported, preferably on carbon powder or the like, shows greater activity for oxygen reduction and better resistance to sintering than does a comparable platinum catalyst. A fuel cell electrode especially suited for use as a phosphoric acid fuel cell cathode comprises the supported platinum-gallium alloy electrocatalyst bound to an acid resistant support member.
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