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Platinum-ruthenium-palladium fuel cell electrocatalyst

United States Patent

6,995,114
February 7, 2006
View the Complete Patent at the US Patent & Trademark Office
A catalyst suitable for use in a fuel cell, especially as an anode catalyst, that contains platinum at a concentration that is between about 20 and about 60 atomic percent, ruthenium at a concentration that is between about 20 and about 60 atomic percent, palladium at a concentration that is between about 5 and about 45 atomic percent, and having an atomic ratio of platinum to ruthenium that is between about 0.7 and about 1.2. Alternatively, the catalyst may contain platinum at a concentration that is between about 25 and about 50 atomic percent, ruthenium at a concentration that is between about 25 and about 55 atomic percent, palladium at a concentration that is between about 5 and about 45 atomic percent, and having a difference between the concentrations of ruthenium and platinum that is no greater than about 20 atomic percent.
Gorer; Alexander (Sunnyvale, CA)
Symyx Technologies, Inc. (Santa Clara, CA)
10/ 763,842
20050260094
January 23, 2004
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This was made with Government support under grant number DE-FG03-97ER82492 awarded by the Department of Energy. The Government has certain rights in this invention.