Matsushita Electric Industrial Co., Ltd.

Hiroshi Kumano

Atsushi Nishino

Kazunori Sonetaka

Mitsugu Okahisa

Tomohiko Arita

Kaoru Murakami

Hayashi Hayakawa

Yoshinori Noguchi

Sadao Fukuda

Yasuji Amano

Hidemi Fukunaga

Kazunori Sonetake

The disclosure relates to a silver oxide primary cell which includes a casing composed of a positive electrode container and a negative electrode container to define a sealed chamber between them, a positive electrode, an insulating layer, a negative electrode, a separator member, an electrically conductive member, and an insulating gasket housed in the sealed chamber. The electrically conductive member is pressed, at its portion protruding toward peripheral edge portion of the positive electrode, against the bottom face of the positive electrode container by the insulating gasket, and is simultaneously electrically connected to the bottom face or side wall of the positive electrode container.

Silver oxide primary cell

The present invention relates to a divalent silver oxide for use in primary cells which is stable in an alkaline solution, slow in the speed of oxygen gas generation with favorable reproducibility and has X-ray diffraction peak values different from that of conventional divalent silver oxide and the method of manufacturing the divalent silver oxide of the above described type. By the employment of the divalent silver oxide according to the present invention, it is possible to produce, at low cost, batteries having high energy density per unit weight and volume, with small amount of gas generation to prevent swelling or expansion of the cells.

Divalent silver oxide for use in primary cell and manufacturing method

An alloy consisting predominantly of lead and containing 0.1 to 3.0% by weight of tin, 0.1 to 0.3% by weight of arsenic and 0.01 to 0.1% by weight of aluminum or copper. The alloy may further contain 0.002 to 1.0% by weight of cadmium. The alloy is useful for grids, inter-cell connectors and poles to provide lead-acid batteries less prone to self-discharge and capable of withstanding over discharge.

Lead alloy for lead-acid batteries and process for producing the alloy

A sheet of partially acetalled polyvinyl alcohol is used as the substratum of the article, and a sparingly soluble silver halide is precipitated on the sheet from an aqueous phase such as an ammoniacal silver chloride solution.

Method of producing sheet-formed bactericidal article

A manganese dioxide layer of improved quality is formed on an anodized valve metal substrate by repeating only a few times the steps of immersing the substrate in an aqueous solution of manganese nitrate and heating the wet substrate to cause pyrolytic decomposition of manganese nitrate to manganese dioxide in a semiclosed radiant furnace, wherein the decomposition proceeds under a positive pressure of a small magnitude due to prolonged retention of gaseous decomposition products.

Method for fabrication of manganese oxide solid electrolyte capacitor

Manganese dioxide obtained at the cathode by electrolyzing a hydrochloric acid-acidified aqueous manganese chloride solution with a specific current efficiency is high in oxygen content and extremely active as a depolarizer for cells.

Novel manganese dioxide

A molded material comprising CaCO.sub.3 and/or MgCO.sub.3 is made and used as a reaction bed through which carbonated water is run to make mineral water.

Growing community of inventors

Kadoma, Japan

Hiroshi Kumano