Low hydrogen overvoltage cathode and process for production ther

Details Low hydrogen overvoltage cathode and process for production ther Low hydrogen overvoltage cathode and process for production ther

1997-12-17

1999-08-31

Bell, Bruce F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204290F, 204293, 205 57, 205152, 205236, 205237, 205255, 205256, C25B 1100

Patent

active

059449667

ABSTRACT:
A novel cathode of low hydrogen overvoltage is provided which is useful for electrolysis of water and electrolysis of an aqueous alkali metal chloride such as sodium chloride. A process for producing the cathode is also provided. The low hydrogen overvoltage cathode comprises an electroconductive base material; and a coating layer containing at least one organic compound selected from the group consisting of amino acids, monocarboxylic acids, dicarboxylic acids, monoamines, diamines, triamines, and tetramines, and derivatives thereof at a content of from 0.5% to 18% by weight in terms of carbon, and a metal component selected from the group consisting of nickel, nickel-iron, nickel-cobalt, and nickel-indium at an indium content ranging from 1% to 90% by weight. The process for producing the low hydrogen overvoltage cathode comprises conducting electrodeposition to form a coating layer on a surface of an electroconductive base material in a plating bath containing at least nickel ions, nickel and iron ions, nickel and cobalt ions, or nickel and indium ions, and containing additionally at least one organic compound selected from the group consisting of amino acids, monocarboxylic acids, dicarboxylic acids, monoamines, diamines, triamines, and tetramines, and derivatives thereof.

REFERENCES:
patent: 4465580 (1984-08-01), Kasuya
patent: 4801368 (1989-01-01), Yamashita et al.
Database WPI 3/82, Derwent Publications Ltd., London, GB; AN 82-30103, XP002056840.
Database WPI 5/82, Derwent Publications Ltd., London, GB; AN 82-40559, XP002056841.

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