Liquid permeation-type gas-diffusion cathode

Details Liquid permeation-type gas-diffusion cathode Liquid permeation-type gas-diffusion cathode

1997-06-24

1998-10-27

Bell, Bruce F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204282, 204283, C25B 100

Patent

active

058274120

ABSTRACT:
A liquid-permeable gas-diffusion cathode adapted for caustic soda electrolysis in contact with an ion-exchange membrane partitioning an electrolytic cell into an anode chamber and a cathode gas chamber. Plural horizontal concave grooves and/or convex portions are provided in an interval with one another on the surface of the gas-diffusion cathode facing the gas chamber. Plural vertical concave grooves may also be provided in an interval on the surface of the cathode crossing the horizontal grooves and/or convex portions. Aqueous caustic soda solution thus formed flows downward along the grooves, etc., without covering other portions of the cathode surface, and is easily released therefrom without clogging perforations in the gas-diffusion layer of the cathode.

REFERENCES:
patent: 5676808 (1997-10-01), Nishiki et al.
patent: 5693213 (1997-12-01), Shimamune et al.

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