Durable electrode for electrolysis and process for...

Details Durable electrode for electrolysis and process for... Durable electrode for electrolysis and process for...

C - Chemistry, Metallurgy

25

B

117/103, 204/195

C25B 11/08 (2006.01) C25B 11/04 (2006.01) C25C 7/02 (2006.01)

Patent

CA 1252066

ABSTRACT OF THE DISCLOSURE 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 tantalum 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 at least one metal salt of Ti and/or Sn, and Pt from a solution 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.

446417

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