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US 6,297,185 B1Granted
Catalyst
AssigneeT/J Technologies, Inc.
InventorsLevi T. Thompson, Michael Wixom, David Tarnowski, Cong Pu
Life of this patent
Estimating the term…
Abstract
A catalyst comprises an electrically conductive ceramic substrate having at least one noble metal supported thereupon. The substrate may be a transition metal based ceramic such as a carbide, nitride, boride, or silicide of a transition metal, and the noble metal may comprise a mixture of noble metals. The substrate may comprise a high surface area ceramic. Also disclosed are fuel cells incorporating the catalysts.
Claims14
A catalyst comprising:
- a support body comprised of a Group V-VI transition metal based, electrically conductive ceramic, said electrically conductive ceramic comprising:
- a first compound of at least one Group V-VI transition metal, said first compound being selected from the group consisting of carbides, nitrides, borides, silicides, and combinations thereof;
- and a second compound of at least one Group V-VI transition metal, said second compound being present in an amount greater than zero and up to 15% by weight of the electrically conductive ceramic, said second compound being selected from the group consisting of oxides, oxycarbides, oxyborides, oxysilicides, oxynitrides and combinations thereof;
- and
- at least one noble metal supported upon said support body.
2 more elements
A fuel cell wherein at least one electrode thereof includes an electrocatalyst, said electrocatalyst comprising:
- a support body comprised of an electrically conductive Group V-VI transition metal based ceramic, said electrically conductive ceramic comprising:
- a first compound of at least one Group V-VI transition metal, said first component being selected from the group consisting of carbides, nitrides, borides, silicides, and combinations thereof;
- and a second compound of at least one Group V-VI transition metal, said second compound being present in an amount greater than zero and up to 15% by weight of the electrically conductive ceramic, said second compound being selected from the group consisting of oxides, oxycarbides, oxyborides, oxysilicides, oxynitrides and combinations thereof;
- and
- at least one noble metal supported upon said support body.
2 more elements
A catalyst comprising:
- a support body comprised of a transition metal based electrically conductive ceramic, said electrically conductive ceramic comprising:
- a first compound of at least one Group V-VI transition metal, said first compound being selected from the group consisting of carbides, nitrides, borides, silicides, and combinations thereof;
- and a second compound of at least one Group V-VI transition metal, said second compound being present in an amount greater than zero and up to 15% by weight of the electrically conductive ceramic, said second compound being selected from the group consisting of oxides, oxycarbides, oxyborides, oxysilicides, oxynitrides and combinations thereof;
- and
- platinum and molybdenum supported upon said support body.
2 more elements
Dependencies are inferred from the claim text.