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US 2006/0134507 A1Published application
Fuel cell electrode containing metal phosphate and fuel cell using the same
AssigneeSamsung SDI Co., Ltd.
InventorsJung-ock Park, Hyo-rang Kang
Life of this patent
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Abstract
A fuel cell electrode includes a catalyst layer, which includes a supported metallic catalyst, a proton conductor including a metal phosphate, a binder, and a gas diffusion layer including an electrical conductive material.
Claims29
A fuel cell electrode, comprising:
- a catalyst layer comprising,
- a metallic catalyst,
- a carrier supporting the metallic catalyst,
- a proton conductor, comprising a metal phosphate, and
- a binder;
- and
- a gas diffusion layer comprising,
- an electrical conductive material.
5 more elements
A method of preparing a fuel cell electrode, comprising:
- mixing a supported metallic catalyst with a metal solution;
- adjusting pH of the mixed supported metallic catalyst and metal solution to precipitate a metal oxide on the supported metallic catalyst to form a supported catalyst-metal oxide composite;
- separating the supported catalyst-metal oxide composite from a liquid;
- mixing the supported catalyst-metal oxide composite with an aqueous phosphoric acid solution and a dispersant to form a metallic catalyst precursor;
- heat treating the metallic catalyst precursor to obtain a supported catalyst-metal phosphate composite;
- mixing the supported catalyst-metal phosphate composite with a binder and a solvent;
- and
- coating the mixed supported catalyst-metal phosphate composite, binder, and solvent on a gas diffusion layer.
5 more elements
A method of preparing a fuel cell electrode, comprising:
- mixing a supported metallic catalyst with a metal solution;
- adjusting pH of the mixed supported metallic catalyst and metal solution to precipitate a metal oxide on the supported metallic catalyst to form a supported catalyst-metal oxide composite;
- separating the supported catalyst-metal oxide composite from a liquid;
- heat treating the separated supported catalyst-metal oxide composite;
- mixing the heat treated supported catalyst-metal oxide composite with an aqueous phosphoric acid solution and a dispersant to form a metallic catalyst precursor;
- heat treating the metallic catalyst precursor to obtain a supported catalyst-metal phosphate composite;
- mixing the supported catalyst-metal phosphate composite with a binder and a solvent;
- and
- coating the mixed supported catalyst-metal phosphate composite, binder, and solvent on a gas diffusion layer.
6 more elements
Dependencies are inferred from the claim text.