Recoating of electrodes

Details Recoating of electrodes Recoating of electrodes

C - Chemistry, Metallurgy

25

B

117/157, 117/7

C25B 11/00 (2006.01) C25B 11/04 (2006.01)

Patent

CA 1173303

ABSTRACT Used dimensionally stable electrodes having a valve-metal base and an originally conductive and electrocatalytic coating of e.g. ruthenium-titanium oxide are cleaned and activated by impregnation with a relatively dilute solution preferably containing only a decomposable platinum-group metal compound, followed by heating to enrich the old coating with platinum-group metal/oxide. A new outer electrocatalytic coating which is the same as or similar to the old coating is then applied on top.

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