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AssigneesMatsushita Electric Industrial Co., Ltd., Mitsui Mining & Smelting Co., Ltd.
InventorsToyohide Uemura, Tomotaka Motomura, Tomiko Yamaguchi, Junichi Asaoka, Shuji Tsuchida
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A non-amalgamated zinc alloy powder for use in an alkaline cell which consists of elements component selected from among the following combinations (1) to (3): (1) 0.01 to 0.5% by weight of bismuth, 0.01 to 0.5% by weight of indium, not less than 0.005% by weight to less than 0.01% by weight of calcium, (2) not less than 0.005% by weight to less than 0.01% by weight of calcium, 0.01 to 0.5% by weight of bismuth, 0 to 0.5% by weight of aluminium, and (3) 0.01 to 0.5% by weight of lead, 0.01 to 0.5% by weight of indium, 0 to less than 0.01% by weight of calcium, 0.01 to 0.5% by weight of aluminium, the balance being zinc and containing 1 ppm or less of iron, and which can greatly suppress the evolution of hydrogen gas and maintain the discharge performance on a practical level, and the method to produce the same.
A non-amalgamated zinc alloy powder for use in an alkaline cell, which consists of 0.01 to 0.5% by weight of bismuth, 0.01 to 0.5% by weight of indium, not less than 0.005% by weight to less than 0.01% by weight of calcium, containing 1 ppm or less of iron, the balance being zinc.
A non-amalgamated zinc alloy powder for use in an alkaline cell, which consists of not less than 0.005% by weight to less than 0.01% by weight of calcium, 0.01 to 0.5% by weight of bismuth, 0 to 0.5% by weight of aluminium, containing 1 ppm or less of iron, the balance being zinc.
A non-amalgamated zinc alloy powder for use in an alkaline cell, which consists of 0.01 to 0.5% by weight of lead, 0.01 to 0.5% by weight of indium, 0 to less than 0.01% by weight of calcium, 0.01 to 0.5% by weight of aluminium, containing 1 ppm or less of iron, the balance being zinc.
The method to produce a non-amalgamated zinc alloy powder for use in an alkaline cell, having an iron content of not more than 1 ppm as an inevitably accidental impurity, which consists of melting an electrolytic deposit zinc obtained by electrolysis and containing iron in an amount of 1 ppm or less, together with elements in such amounts in one of the following compositions (1) to (3),
Dependencies are inferred from the claim text.