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:
Mar. 27, 2001
Filed:
Mar. 05, 1999
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Disclosed is a hydrogen storage alloy electrode for use in alkaline storage batteries that can reduce internal resistance of the battery and can give an excellent output characteristic and a long cycle life to the battery. The electrode comprises an AB,-type hydrogen storage alloy powder, a yttrium compound and a compound of a light rare earth element. The total content of the yttrium compound and the compound of a light rare earth element is in a range of 0.5 to 2.0 parts by weight per 100 parts by weight of hydrogen storage alloy powder. Preferable ratios of the yttrium compound and the compound of a light rare earth element selected from La, Ce, Pr and Nd are, respectively, 60 wt % or more and 7 wt % or less in the total amount of the yttrium compound and the compound of the light rare earth element.