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METHOD FOR PRODUCING A COBALT-SUBSTITUTED NICKER HYDROXIDE WITH ALPHA STRUCTURE, STABLE IN ALKALINE MEDIUM, AND ITS USE IN AN ELECTROCHEMICAL GENERATOR.
METHOD FOR PRODUCING A COBALT-SUBSTITUTED NICKER HYDROXIDE WITH ALPHA STRUCTURE, STABLE IN ALKALINE MEDIUM, AND ITS USE IN AN ELECTROCHEMICAL GENERATOR.
Process for the preparation of a nickel hydroxide substituted with cobalt of alpha structure and corresponding to the formula: Ni1-xCOx(OH)2-t.yH2O.(x/n + t/n)A in which A denotes at least one anion of valency n and x, y and t are such that 0.2/=x/=0.5 0y2.5 0/=t0.6 which comprises a stage of precipitation of a mixed nickel cobalt hydroxide starting with an aqueous solution of a nickel(II) salt and with an aqueous solution of a cobalt(II) salt in the presence of the anion(s) A, and a stage of oxidation of cobalt(II) to cobalt(III) in aqueous solution or in the precipitate formed. This hydroxide can be employed as a positive electrode (6) in an electrochemical generator (1). IMAGE
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机译:制备被α结构的钴取代并对应于下式的氢氧化镍的方法:Ni1-xCOx(OH)2-t.yH2O。(x / n + t / n)A其中A表示至少一种阴离子化合价n和x,y和t的取值使得0.2 = x = 0.5 0 展开▼