Method for making a fuel cell electrode

Details Method for making a fuel cell electrode Method for making a fuel cell electrode

1976-12-17

1977-10-18

Kendall, Ralph S.

Coating processes

Electrical product produced

Fuel cell part

252447, 2524253, 252444, 429 42, B01J 2118, B01J 2342

Patent

active

040546870

ABSTRACT:
A support material for platinum, platinum alloys, or other noble metal catalyst, is made from carbon particles by heat treating the carbon until it is at least partially graphitized, depositing a metal on the heat treated carbon particles which will catalyze the oxidation of graphite in an oxidizing atmosphere, and oxidizing the surfaces of the heat treated carbon particles at the sites of the catalyst crystals to pit or etch the surfaces at these sites. When this material is used as a support for platinum it reduces the rate of platinum migration when the supported platinum catalyst is heated in the presence of a liquid, thereby reducing the loss of platinum surface area which often occurs under these conditions.

REFERENCES:
patent: 3406011 (1968-10-01), Zirngibl et al.
patent: 3663166 (1971-05-01), Weise et al.
patent: 3804916 (1974-04-01), Lalancette

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