Ternary fuel cell catalysts containing platinum, cobalt and chromium
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United States of America Patent
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May 8, 1984
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N/A
app pub date -
Jan 17, 1983
filing date -
Jan 17, 1983
priority date (Note) -
Expired
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Abstract
An improved ternary noble metal-containing, alloy catalyst which has a catalytic activity for the electrochemical reduction of oxygen greater than two and one-half times that of the supported unalloyed noble metal alone. In addition, a disclosure of the method of preparing said catalyst is by intimately contacting two metallic elements with a supported noble metal, then heating this material to form the ternary alloy catalyst. This catalyst has particular utility for the electrochemical reduction of oxygen which makes it particularly useful as a cathode in acid fuel cells. The preferred embodiment of this catalyst is finely divided platinum alloyed with chromium and cobalt supported on an electrically conductive carbon-black support material.
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