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:
Feb. 06, 2001
Filed:
May. 01, 1998
Akihiro Maeda, Kobe, JP;
Hirokazu Kimiya, Kyoto, JP;
Yoshio Moriwaki, Hirakata, JP;
Isao Matsumoto, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A high energy density alkaline storage battery which uses a positive electrode including mainly nickel oxide is provided by increasing the capacities of the positive electrode and negative electrode. For increasing the capacity density of the positive electrode, the active material is incorporated as a solid solution with at least one element selected from manganese, chromium, aluminum and calcium in the range of from not less than 3 mol % to not more than 15 mol % relative to the active material, and the surface and/or the neighborhood of the surface of the active material are coated with a cobalt oxyhydroxide having a high electric conductivity of a specific resistance of 15 &OHgr;·cm or less and a low crystallinity.