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US 4,292,197 AGranted
Method of preparing electrocatalyst for an oxygen depolarized cathode electrolytic cell
AssigneePPG Industries, Inc.
InventorRonald D. Chamberlin
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Abstract
Disclosed is a method of preparing a cathodic electrocatalyst where the cathode is a bed of porous particles having HO.sub.2.sup.- disproportionation catalyst dispersed on the surfaces and pores thereof.
Claims6
A method of preparing electroconductive, catalytic particles comprising the steps of:
- (a) forming a slurry of activated carbon and a thermally decomposable silver compound;
- (b) impregnating the activated carbon with the thermally decomposable silver compound;
- (c) drying the slurry whereby to form dried carbon product;
- (d) thereafter mixing the dried carbon product with a dispersion of a hydrophobic compound to form a second slurry;
- (e) impregnating the hydrophobic compound into the carbon product;
- (f) forming the second slurry into particles;
- and
- (g) thereafter heating the particles formed from the second slurry whereby to dry the particles, sinter the hydrophobic compound, and form electroconductive, catalytic, sintered particles having silver HO.sub.2.sup.- disproportionation catalyst impregnated carbon and hydrophobic material.
5 more elements
Dependencies are inferred from the claim text.