Production of cathode for use in electrolytic cell

Details Production of cathode for use in electrolytic cell Production of cathode for use in electrolytic cell

C - Chemistry, Metallurgy

25

B

204/196.1, 204/2

C25B 11/08 (2006.01) C25B 11/04 (2006.01) C25D 3/62 (2006.01)

Patent

CA 1244375

ABSTRACT PRODUCTION OF CATHODE FOR USE IN ELECTROLYTIC CELL A method of producing a cathode which operates at low hydrogen over-voltage in the electrolysis of water or aqueous solutions by electrodepositing on a nickel or nickel alloy substrate a coating comprising at least an outer layer of at least one platinum group metal, the outer layer of the platinum group metal being deposited from a plating bath which contains a solution of at least one platinum group metal compound and at least one additive of the type which suppresses maxima in polarographic waves associated with reactions carried out at a dropping mercury electrode, said additive being further selected from those which do not react with the platinum group metal in the plating bath, such as gelatin, bromophenol blue and iso-octyl phenoxy-polyethoxy ethanol.

461595

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