Massive dual porosity gas electrodes

Details Massive dual porosity gas electrodes Massive dual porosity gas electrodes

C - Chemistry, Metallurgy

25

B

319/15, 204/192

C25B 11/03 (2006.01) H01M 4/86 (2006.01)

Patent

CA 1169026

ABSTRACT A dual porosity gas electrode adapted for utilization as a vertically-disposed oxygen gas-bearing electrochemically reducing cathode in electrolytic cells. For efficient operation an electrolyte liquid pressure of greater than 1 psi (ca. 0.69 dynes/cm2) is employed. The electrode is comprised of distinct juxta- posed, contiguous yet separate porous electrode body wall members or layer sections, one of which is of a relatively fine porous structure and the other of which is of a relatively coarse porous structure. The electrode has a height of at least 3 feet and a bubble point pressure that is larger than the summation of the hydraulic head pressure and the liquid capillary pressure in the coarse porous layer.

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