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US 4,233,340 AGranted
Process for preparing insoluble electrode
AssigneeTDK Electronics Co., Ltd.
InventorsShunjiro Saito, Kazuhide Aue, Makoto Kobayashi, Akio Nakamura
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Abstract
An insoluble electrode for electrolysis which comprises repeatedly coating and baking a slurry of palladium oxide containing a platinum compound which can be thermally decomposed to form platinum metal, optionally the other metal salt or oxide in a solvent and a solution of a platinum compound which can be thermally decomposed to form platinum metal in a solvent on a conductive substrate in optional order at two or more times.
Claims8
A process for preparing an insoluble electrode for electrolysis which comprises:
- (a) coating a conductive substrate with a coating composition selected from the group consisting of:
- i. a slurry of palladium oxide in a solvent containing a platinum compound, which can be thermally decomposed to form platinum metal, and
- ii. a solution of a platinum compound, which can be thermally decomposed to form platinum metal, in a solvent;
- (b) baking the substrate treated by step (a);
- (c) coating the substrate treated by step (b) with a coating composition selected from the group consisting of said coating composition (a)(i) and said coating composition (a)(ii);
- wherein the coating composition used in step (c) is different from that used in step (a);
- (d) baking the substrate treated by step (c);
- and
- (e) repeating steps (a) to (d) two or more times.
6 more elements
Dependencies are inferred from the claim text.