Ternary fuel cell catalysts containing platinum and cobalt

Details Ternary fuel cell catalysts containing platinum and cobalt Ternary fuel cell catalysts containing platinum and cobalt

B - Operations, Transporting

01

J

319/23, 252/74

B01J 23/89 (2006.01) H01M 4/86 (2006.01) H01M 4/88 (2006.01) H01M 4/92 (2006.01)

Patent

CA 1212934

Abstract Ternary Fuel Cell Catalysts Containing Platinum and Cobalt 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 dis- closure 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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