Abstract: A non-amalgamated zinc alloy powder for use in an alkaline cell which consists of elements selected from the following compositions (1) to (4);(1) 0.001 to 0.5% by weight of aluminum and 0.01 to 0.5% by weight of bismuth,(2) 0.001 to 0.5% by weight of aluminum, 0.01 to 0.5% by weight of bismuth and indium in an amount greater than zero and up to 1.0% by weight,(3) 0.001 to 0.5% by weight of aluminum, 0.01 to 0.5% by weight of bismuth and lithium in an amount greater than zero and up to 0.5% by weight,(4) 0.001 to 0.5% by weight of aluminum, 0.01 to 0.5% by weight of bismuth, indium in an amount greater than zero and up to 1.0% by weight and calcium or lithium in an amount greater than zero and up to 0.5% by weight;and the balance being zinc and containing iron as an inevitably accidental impurity in an amount of not more than 1 ppm; and which can greatly suppress the evolution of hydrogen gas and maintain the discharge performance on a practical level:and a method to produce the same.

Abstract: 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.

Abstract: A non-amalgamated zinc alloy powder for use in an alkaline cell which comprises 1 ppm or less of iron and an elemental component selected from among the following combinations (1) to (5):(1) 0.01 to 0.5% by weight of bismuth, 0.01 to 0.5% by weight of indium and 0.01 to 0.5% by weight of lead,(2) 0.01 to 0.5% by weight of bismuth, 0.01 to 0.5% by weight of indium and 0.01 to 0.5% by weight of calcium,(3) 0.01 to 0.5% by weight of lead and 0 to 1.0% by weight in total of at least one member selected from among bismuth, aluminum and calcium,(4) 0.01 to 0.5% by weight of calcium, 0.01 to 0.5% by weight of bismuth and 0 to 0.5% by weight of aluminum, and(5) 0.01 to 0.5% by weight of lead, 0.01 to 0.5% by weight of indium, 0.01 to 0.5% by weight of calcium and 0 to 0.5% by weight of aluminum, and which can greatly suppress the evolution of hydrogen gas and maintain the discharge performance on a practical level, and a method for the production of the same.