The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 28, 1997
Filed:
Dec. 12, 1995
Yohei Hattori, Moriguchi, JP;
Nobuyasu Morishita, Fujiidera, JP;
Hiroki Takeshima, Fujisawa, JP;
Hideo Kaiya, Chigasaki, JP;
Munehisa Ikoma, Nara-ken, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The present invention relates to an alkaline secondary battery improved in the structure of the plate substrate, and provides an alkaline secondary battery which uses a three-dimensional porous substrate which is inexpensive, improved in stability in electrolyte and inhibited from shrinkage at sintering. The battery has such a construction comprising a sealed case containing positive electrodes mainly composed of a nickel oxide, negative electrodes mainly composed of a hydrogen-absorbing alloy or a cadmium oxide, an alkaline electrolyte containing at least one component selected from the group consisting of potassium hydroxide, lithium hydroxide and sodium hydroxide and separators, the substrate used for at least one of the positive electrode and the negative electrode being a three-dimensional porous iron sintered body on the surface of which is provided a nickel coating layer.