Durable electrode for electrolysis

Details Durable electrode for electrolysis Durable electrode for electrolysis

1984-01-31

1984-11-06

Andrews, R. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204290R, 204291, C25B 1108, C25B 126

Patent

active

044810970

ABSTRACT:
An electrode comprising a substrate of a conducting metal, a coat of an electrode active substrate, and a layer interposed between the substrate and the coat to serve as a protective barrier for the substrate acquires improved durability by using, as the intermediate layer, a layer having platinum dispersed in a mixed oxide consisting of an oxide of at least one metal selected from the group consisting of titanium and tin, each having a valence of 4, and an oxide of at least one metal selected from the group consisting of tantalum and niobium, each having a valence of 5. The electrode of improved durability is produced by a process which comprises the steps of preparing a substrate of a conducting metal, depositing a solution containing salts of Ti and/or Sn, Ta and/or Nb, and Pt on the substrate, heating the resultant coated substrate under the blanket of an oxidizing gas thereby forming an intermediate layer on the substrate, and subsequently coating the intermediate layer with a layer of an electrode active substance.

REFERENCES:
patent: 3950240 (1976-04-01), Cookfair et al.
patent: 4212725 (1980-07-01), Habermann et al.

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