Low hydrogen overvoltage electrode

摘要

This invention presents low hydrogen overvoltage electrode which comprises a plated metal layer of nickel or cobalt which contains partially exposed particles made of nickel or cobalt on an electrode substrate, the surface of which particles does not contain oxygen, which concentration is more than 150 ppm, and process for preparing such electrode, which comprises codepositing electrically and electrophoretically nickel or cobalt particles with nickel or cobalt from a dispersed solution which contains Cl- of the concentration of not less than 30 gCl-/l solution.