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US 5,732,463 AGranted
Method of preparing a fuel cell electrode
AssigneeInternational Fuel Cells Corporation
InventorsRichard D. Breault, John Donahue, Robert L. Haven
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Abstract
The present invention discloses a method for preparing a catalyst to be applied to an electrode substrate, the method incorporates cooling the catalyst material to a temperature below a critical temperature and grinding the cooled catalyst to produce a catalyst material which will create a uniform catalytic layer on an electrode substrate. The finished electrode having significantly fewer particles than the electrode prepared by the prior art method.
Claims1
A method for making an electrode for use as an anode or cathode in an electrochemical cell comprising;
- a. cooling a weighed amount of catalyst below its critical temperature;
- b. while cooled, grind the catalyst to reduce its particle size;
- c. apply the ground catalyst to a surface of a porous electrode substrate;
- d. compact the catalyst on the electrode surface and then sinter the catalyst.
1 more element
Dependencies are inferred from the claim text.