Zinc-alkaline battery
AssigneesMatsushita Electric Industrial Co., Ltd., Mitsui Mining & Smelting Co., Ltd.
InventorsAkira Miura, Ryoji Okazaki, Kanji Takata, Tsukasa Ohira
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Abstract
This invention uses a zinc alloy containing In, one element of Al or Mg and, optionally, one or both of Pb and Cd for the anode of a zinc-alkaline battery which employs zinc as an active material of the anode (2), aqueous alkaline solution as an electrolyte, and manganese dioxide, silver oxide, oxygen and so forth as an active material of the cathode (5). The use of such zinc alloy permits the reduction of the amount to be used of mercury employed for amalgation of the anode zinc surface with the object of corrosion inhibition, thereby enabling the provision of a low pollution zinc-alkaline battery.
Claims5
A zinc-alkaline battery in which there is used as an anode active material a zinc alloy powder containing zinc as the principal component, 0.01 to 0.5% by weight of In, 0.005 to 0.2% by weight of Al, and further 0.01 to 0.5% by weight in total of either one or both of Pb and Cd.
A zinc-alkaline battery in which there is used as an anode active material a zinc alloy powder containing 0.01 to 0.5% by weight of In, 0.005 to 0.2% by weight of Al and, further 0.01 to 0.5% by weight in total of either one or both of Pb and Cd, said alloy being amalgamated to a mercury concentration of 3% by weight or less.
Dependencies are inferred from the claim text.