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METHOD FOR STABILIZING PRIMARY ELECTROCHEMICAL GENERATORS WITH REACTIVE ANODES MADE OF ZINC, ALUMINUM OR MAGNESIUM, STABILIZED ANODE OBTAINED BY THIS METHOD AND GENERATOR CONTAINING SUCH ANODE.
METHOD FOR STABILIZING PRIMARY ELECTROCHEMICAL GENERATORS WITH REACTIVE ANODES MADE OF ZINC, ALUMINUM OR MAGNESIUM, STABILIZED ANODE OBTAINED BY THIS METHOD AND GENERATOR CONTAINING SUCH ANODE.
The invention provides a method of stabilizing a primary electrochemical cell which includes at least one reactive anode made of a metal selected from the group constituted by zinc, aluminum, and magnesium, the method consisting in adding a stabilizer to said electrode, the stabilizer concentration lying in the range 0.001% to 1% by weight of electrode metal, and the stabilizer comprising at least one alkyl and polyethoxylalcohol sulfide satisfying the following formula: R-S-(CH2)2-(O-CH2-CH2-)n-OH (1) in which: R is an alkyl radical which may optionally be branched, an aryl radical, or an alkylaryl radical; and n lies in the range 2 to 100. The invention also provides an anode obtained by the above method, and a primary electrochemical cell having an alkaline or a saline electrolyte and including such an anode.
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