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Method for making oxygen-reducing catalyst layers

United States Patent

June 22, 2010
View the Complete Patent at the US Patent & Trademark Office
Methods are provided for making oxygen-reducing catalyst layers, which include simultaneous or sequential stops of physical vapor depositing an oxygen-reducing catalytic material onto a substrate, the catalytic material comprising a transition metal that is substantially free of platinum; and thermally treating the catalytic material. At least one of the physical vapor deposition and the thermal treatment is performed in a processing environment comprising a nitrogen-containing gas.
O'Brien; Dennis P. (Maplewood, MN), Schmoeckel; Alison K. (Stillwater, MN), Vernstrom; George D. (Cottage Grove, MN), Atanasoski; Radoslav (Edine, MN), Wood; Thomas E. (Stillwater, MN), O'Neill; David G. (Lake Elmo, MN)
3M Innovative Properties Company (Saint Paul, MN)
11/ 379,518
April 20, 2006
This invention was made with U.S. Government support under Cooperative Agreement DE-FC36-03GO13106 awarded by the Department of Energy. The U.S. Government has certain rights in this invention.