C - Chemistry – Metallurgy – 25 – B
Patent
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.
345783
Lefevre Joseph D.
Mcintyre James A.
Phillips Robert F.
Smart & Biggar
The Dow Chemical Company
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