Combined cathode and diaphragm unit for electrolytic cells

Details Combined cathode and diaphragm unit for electrolytic cells Combined cathode and diaphragm unit for electrolytic cells

1978-07-17

1980-01-08

Mack, J. H.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204290R, 204295, 204296, 204283, C25B 1103, C25B 1106, C25B 1304

Patent

active

041826701

ABSTRACT:
An especially efficient and durable electrolytic cell is provided by utilizing a combined cathode and diaphragm unit wherein the cathode is made by spray coating a ferrous metal substrate with a powder metal having lower hydrogen overvoltage than said substrate to form a protected cathode surface having a larger surface area than the substrate, and vacuum depositing a polymer impregnated asbestos fiber diaphragm onto a spray coated surface of the cathode to form a fibrous diaphragm thereon. Preferably, the cathode surface is made with nickel and the polymer impregnated asbestos diaphragm contains from about 10 to about 30 percent based on the weight of asbestos of an organic cementing agent such as a fluorohydrocarbon polymer.

REFERENCES:
patent: 3694281 (1972-09-01), Leduc
patent: 3853720 (1974-12-01), Korach et al.
patent: 3928166 (1975-12-01), O'Leary et al.
patent: 3945907 (1976-03-01), Gokhale
patent: 3980613 (1976-09-01), Bachot et al.

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