Mitsui Minings & Melting Co., Ltd.

Matsushita Electric Industrial Co., Ltd.

Masamoto Sasaki

Yoshimi Hata

Hirohisa Senzaki

Tomotaka Motomura

Masaharu Onoue

Morimasa Sumida

Hirofumi Asano

Junichirou Tanaka

Process for preparing metallic cadmium powder

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.

Zinc alloy powder for alkaline cell and method to produce the same

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Takehara, Japan

Masamoto Sasaki