Lead oxide-coated electrode for use in electrolysis and process

Details Lead oxide-coated electrode for use in electrolysis and process Lead oxide-coated electrode for use in electrolysis and process

1987-08-31

1989-04-18

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204 40, 204 561, 204290F, 4271263, 4271265, 427226, 427327, 4274193, 428421, 428469, 428701, C25D 500

Patent

active

048224596

ABSTRACT:
A lead oxide-coated electrode for use in electrolysis is disclosed, which comprises a primary layer comprising platinum and/or platinum oxide, an intermediate layer comprising .alpha.-PbO.sub.2, and a coating layer comprising .beta.-PbO.sub.2 successively coated on a substrate comprising a corrosion resistant metal. The electrode has a strong and durable lead oxide coating firmly bonded to the substrate, does not suffer from passivation, resistance increase, etc. and can be used stably for a long time at high current density. A process for producing the electrode is also disclosed.

REFERENCES:
patent: 3434942 (1969-03-01), Waterman
patent: 4510034 (1985-04-01), Ohshima et al.
Chemical Abstracts, vol. 89, No. 22, Nov. 1978, p. 510, Abstract No. 187959x.
Chemical Abstracts, vol. 101, No. 4, Jul. 1984, p. 424, Abstract No. 30198s.

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