Massive dual porosity gas electrodes

Details Massive dual porosity gas electrodes Massive dual porosity gas electrodes

1978-09-05

1981-04-07

Andrews, R. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204284, 204291, 204292, C25B 900, C25B 1103

Patent

active

042604699

ABSTRACT:
A relatively-massive dual porosity gas electrode particularly well suited and adapted for utilization as a vertically-disposed oxygen gas-bearing electrochemically reducing cathode in electrolytic cells wherein, for efficient and practical, commercially-large-scale-output operations, there are required to be employed substantial electrolyte liquid depths creating considerable head pressures generally greater than at least about 1 psi (ca. 0.69 dynes/cm.sup.2) is comprised of distinct juxtaposed, contiguous yet separate diversely porous electrode body wall members or layer sections, one of which for immediate electrolyte contact and handling is of relatively finer pored structure and the other of which for immediate gas contact and handling is of relatively larger or coarse pored structure; the electrode being so embodied and characterizable for given application as to have a bubble point pressure that is larger than the summation of the hydraulic head pressure and the liquid capillary pressure in the coarse pore layer.

REFERENCES:
patent: 3423247 (1969-01-01), Darland et al.
patent: 3676324 (1972-07-01), Mills
patent: 3708416 (1973-01-01), Ruehlen et al.
patent: 3720597 (1973-03-01), Ashe, Jr. et al.
patent: 3772201 (1973-11-01), Mills
patent: 3784456 (1974-01-01), Otto
patent: 4086155 (1978-04-01), Jonville

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