Chemistry: electrical current producing apparatus – product – and – Having earth feature
Reexamination Certificate
2007-12-04
2007-12-04
Maples, John S. (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Having earth feature
C429S047000, C429S047000, C427S115000
Reexamination Certificate
active
10337065
ABSTRACT:
Fuel cell electrodes comprising a minimal load of catalyst having maximum catalytic activity and a method of forming such fuel cell electrodes. The preferred method comprises vaporizing a catalyst, preferably platinum, in a vacuum to form a catalyst vapor. A catalytically effective amount of the catalyst vapor is deposited onto a carbon catalyst support on the fuel cell electrode. The electrode preferably is carbon cloth. The method reduces the amount of catalyst needed for a high performance fuel cell electrode to about 0.3 mg/cm2or less, preferably to about 0.1 mg/cm2. The electrocatalytic layer formed comprises unique, rod-like structures.
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Arps James H.
Dearnaley Geoffrey
Gore Enterprise Holdings Inc.
Maples John S.
Morris Paula D.
The Morris Law Firm P.C.
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