Electrochemical primary battery having a stabilized reactive negative electrode made of zinc, aluminum or magnesium, and its stabilized negative electrode

摘要

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.