Electro-chemical cells

Details Electro-chemical cells Electro-chemical cells

H - Electricity

01

M

319/65

H01M 6/24 (2006.01) H01M 8/22 (2006.01) H01M 10/36 (2006.01)

Patent

CA 1151727

ABSTRACT OF THE INVENTION The invention relates to an electro-chemical cell having an electrolyte comprising water, a halogen other than fluorine, a halide other than fluoride, which is not oxidised by the halogen as a soluble salt, and a stable, saturated, organic nitrile or dinitrile containing from 2 to 5 carbon atoms or a mixture thereof, said electrolyte being composed such as to exist in two phases, a first phase being halogen and nitrile-rich and a second phase being water-rich and con- taining halide salt, the cell having an inert electrode in the halogen and nitrile-rich phase and an electrode, con- taining or contacting halogen oxidisable material, in the water-rich phase. The electro-chemical cell of the invention is particularly applicable to systems containing zinc as the halogen oxidisable material. The use of the nitrile-rich phase reduces the degree of reaction between the halogen and the halogen oxidisable material.

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