Electrolytic cell using gas diffusion electrode

Details Electrolytic cell using gas diffusion electrode Electrolytic cell using gas diffusion electrode

1996-04-22

1997-10-14

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204283, 204284, 204290R, C25C 700, C25C 702

Patent

active

056768087

ABSTRACT:
An electrolytic cell for obtaining a caustic alkali by closely contacting a gas diffusion electrode comprising a gas-liquid permeable metal substrate and a gas-liquid permeable collector connected to the substrate to a cation-exchange membrane while supplying an oxygen-containing gas from the opposite side of the cation-exchange membrane. Grooves for taking out a liquid containing a caustic alkali are formed in the contact surface of the gas diffusion electrode with the cation-exchange membrane.
By the formation of the grooves, clogging of the perforations of the gas diffusion electrode with the caustic alkali so formed is prevented, whereby the gas supply can be smoothly carried out and the electrolysis can be stably carried out without reducing the cell voltage.

REFERENCES:
patent: 3864236 (1975-02-01), Lindstrom
patent: 4436608 (1984-03-01), Bennett et al.
patent: 5047133 (1991-09-01), Allen
patent: 5565073 (1996-10-01), Fraser et al.

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