Zinc powder for alkaline batteries

Details Zinc powder for alkaline batteries Zinc powder for alkaline batteries

C - Chemistry, Metallurgy

22

C

C22C 18/04 (2006.01) H01M 4/42 (2006.01) H01M 4/48 (2006.01)

Patent

CA 2196990

A zinc powder for alkaline batteries can comprise up to 20 ppm of iron if it further consists of 0.0005-1 % of aluminium, of a quantity of calcium such that the molar ratio aluminium/calcium amounts at most to 2 and such that the sum of the concentrations of aluminium and calcium amounts at most to 2 %, of 0.001-2 % of at least one of bismuth, indium and gallium, the rest being zinc.

Poudre de zinc pour piles alcalines pouvant contenir jusqu'à 20 ppm de fer si elle contient en outre de 0,0005 à 1 % d'aluminium; une quantité de calcium telle que le rapport molaire maximum aluminium/calcium s'élève à 2 et que la somme maximale des concentrations des quantités d'aluminium et de calcium s'élève à 2 %; de 0,001 à 2 % d'au moins un élément choisi entre le bismuth, l'indium et le gallium; le reste étant composé de zinc.

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