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:
Jul. 24, 2007
Filed:
Feb. 21, 2003
Kazutaka Ikeda, Kamakura, JP;
Susumu Kikuyama, Chigasaki, JP;
Akiko Miyahara, Chigasaki, JP;
Kohji Yuasa, Chigasaki, JP;
Kazutaka Ikeda, Kamakura, JP;
Susumu Kikuyama, Chigasaki, JP;
Akiko Miyahara, Chigasaki, JP;
Kohji Yuasa, Chigasaki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The hydrogen storage alloy electrode comprises: a conductive core material; and an active material layer which contains a hydrogen storage alloy powder and is carried on said core material, and the alloy powder has any shape selected from the group consisting of spherical shapes, substantially spherical shapes and oval shapes. The core material comprises: a conductive sheet; and fibrous or columnar sintered nickel pieces bonded to the surface of the conductive sheet. Alternatively, the active material layer comprises: an active material layer A which contains a hydrogen storage alloy powder A with a mean particle size 'a' and is carried on said core material; and an active material layer B which contains a hydrogen storage alloy powder B with a mean particle size 'b' and is carried on said active material layer A (wherein a<b). Alternatively, the active material layer further contains a crushed alloy powder having on the surface thereof at least one selected from the group consisting of nickel and cobalt. The use of such electrode provides an alkaline storage battery excellent in both discharge characteristics and cycle life.