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Multiple layer electrode for improved performance

United States Patent Application

20020068213
A1
View the Complete Application at the US Patent & Trademark Office
In an electrochemical device, such as a fuel cell or electrocatalytic oxidation cell, a catalyst electrode is comprised of a catalytic structure having multiple layers of varied densities to enhance gas diffusion throughout the electrode. A first catalyst layer has a first density, and a second catalyst has a second density that is about 33 to 50% of the first density and any additional layers having a density which are less than the previous layer. A gas diffusion layer is adjacent the second catalyst layer.
Kaiser, Mark (Arlington Heights, IL), Williams, James C. (Arlington Heights, IL), Liu, Di-Jia (Naperville, IL)
Honeywell International, Inc. Law Dept. AB2 (P.O. Box 2245 Morristown NJ 07962-9806)
09/ 728,803
December 1, 2000
[0001] This invention was made with Government support under Contract No. DE-FC02-99EE50578 awarded by the Department of Energy. The Government has certain rights in this invention.