PRODUCTION OF CATHODE FOR USE IN ELECTROLYTIC CELL

摘要

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 supresses 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.