Patent ID: 6586139
Filing Date: 2003-07-01
Classification: H01M,Y02E

Abstract:
An alkaline battery comprising:a negative electrode having an active material comprised of mercuryless zinc powder containing a gelling agent and one or more metals selected from the group consisting of 0.001-0.5% by weight of gallium 0.005-0.5% by weight of indium 0.0001-0.5% by weight of lead 0.005-0.5% by weight of bismuth. 0.001-0.5% by weight of aluminum and 0.001-0.5% by weight of calcium; a current collector having an outer surface coated with a layer of zinc or a metal having a hydrogen overvoltage higher than that of zinc; and an electrolyte containing an indium compound selected from the group consisting of indium sulfate, indium sulfamate and indium chloride.