Agency of Industrial Science and Technology

Sumitomo Electric Industries, Limited

Ministry of International Trade & Industry

Noboru Wakabayashi

Eiji Kamijo

Eiichi Torikai

Tatsuya Nishimoto

Youji Kawami

Yoji Kawami

Eiichi Torigai

Katsuhito Tani

The invention relates to an aqueous electrolytic cathode and/or anode in which an aqueous solution of alkaline metal hydroxide is used or an active nickel or nickel alloy electrode having greater stability and smaller overvoltage under the condition of high current density for use in electrolysis of aqueous solution of alkaline metal halide, and the method for producing the same. Electrode material consisting of nickel or nickel alloy or electrode material of multiple layers comprising said electrode material coated with nickel or nickel alloy powder is forcibly subjected to oxidization and reduction treatments in repetition under a selected treatment temperature and atmosphere so that the surface area is expanded by the production of surface openings, thereby enabling to obtain an electrode having the said high properties.

Electrode and the method for producing the same

A positive electrode suitable for the electrolysis of water is produced by immersing a nickel electrode in an aqueous solution containing a nickel salt, a rhodium salt, and an alkyl amine borane.

Method for production of positive electrode for electrolysis of water

Growing community of inventors

Ikeda, Japan

Noboru Wakabayashi