Cathodes suitable for use in electrochemical processes evolving

Details Cathodes suitable for use in electrochemical processes evolving Cathodes suitable for use in electrochemical processes evolving

1987-07-16

1988-11-15

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204 461, 204 47, 204 475, 204290R, 204291, 204292, 204293, 427436, C25D 510

Patent

active

047847301

ABSTRACT:
A cathode suitable for use in an electrochemical process evolving hydrogen (for example the chloralkali process) in which the cathode comprises an electrically conductive substrate (1) made of a non-ferrous metal or having a coherent coating of non-ferrous metal on which is provided an electrocatalyst (4) comprising platinum and ruthenium and wherein the cathode is made more poison-resistant by a deposition of gold or silver and, optionally, a further deposition of PTFE. The cathode is particularly resistant to poisoning by iron.

REFERENCES:
patent: 4191618 (1980-03-01), Coker et al.
patent: 4343690 (1982-08-01), De Nora

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