Matsushita Electric Industrial Co., Ltd.

Mitsui Minings & Melting Co., Ltd.

Matsushita Electric Indus. Co. Ltd.

Ryoji Okazaki

Kanji Takata

Akira Miura

Tadashi Sotomura

Satoshi Sekido

Keiichi Kagawa

Toyohide Uemura

Muneaki Nakai

Tomoyuki Shinagawa

Ken'Ichi Morigaki

Tsukasa Ohira

Kan Aoki

This invention uses as the anode active material a zinc alloy containing Ni, at least one element selected from In, Pb, Ga and Cd and, optionally further, one element selected from Al, Mg, Ca, Ba and Sr for the anode of a conventional zinc-alkaline battery which employs zinc as the anode active material, aqueous alkaline solution as the electrolyte, and manganese dioxide, silver oxide, oxygen and so forth as the cathode active material. The use of such zinc alloy permits the reduction of the amount of mercury to be used for amalgamation of the anode zinc surface which is made for the purpose of corrosion inhibition, thereby enabling the provision of a low-pollution zinc-alkaline battery.

Zinc-alkaline battery

A process for producing a solid electrolyte primary cell comprising a lithium anode and an iodine containing cathode. In the process the cell undergoes preliminary cell discharge of at least 2 mAh per cm.sup.2 of the lithium anode surface immediately after its fabrication. Alternatively, the cell may be stored at a relatively low temperature to undergo preliminary self-discharge of at least 3 mAh per cm.sup.2 of the anode surface.

Process for producing solid electrolyte primary cell

In a primary-cell of the type in which a cathode or anode increases its apparent volume as the discharge proceeds, thereby absorbing the electrolyte, at least between a cell enclosure which serves as one of the terminals of the primary-cell or top closure and the cathode or anode electrically connected thereto is interposed a spacer which contains electrolyte, is electrically conductive and reduces its apparent volume when the pressure is applied thereto, thereby squeezing the electrolyte out of it.

Primary-cells

Growing community of inventors

Katano, Japan

Ryoji Okazaki