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:
Dec. 22, 2009
Filed:
Sep. 03, 2002
Nickel electrode material, and production method therefor, and nickel electrode and alkaline battery
Seijiro Ochiai, Osaka, JP;
Mitsuhiro Kodama, Osaka, JP;
Kengo Furukawa, Osaka, JP;
Toshiki Tanaka, Osaka, JP;
Minoru Kuzuhara, Osaka, JP;
Masaharu Watada, Osaka, JP;
Masahiko Oshitani, Osaka, JP;
Seijiro Ochiai, Osaka, JP;
Mitsuhiro Kodama, Osaka, JP;
Kengo Furukawa, Osaka, JP;
Toshiki Tanaka, Osaka, JP;
Minoru Kuzuhara, Osaka, JP;
Masaharu Watada, Osaka, JP;
Masahiko Oshitani, Osaka, JP;
Yuasa Corporation, Takatsuki-shi, Osaka, JP;
Abstract
For accomplishing the subjects, the invention provides a nickel electrode material for use in a nickel electrode, wherein the positive-electrode material constituting the electrode material comprises: positive active material particles which comprise as the main component either a nickel hydroxide or a solid solution in a nickel hydroxide of one or more other elements and in which part of the nickel hydroxide has been oxidized; and a coating layer formed on the surface of the positive active material particles and comprising as the main component a high-order cobalt compound in which the cobalt has an oxidation number larger than 2, the average oxidation number of the nickel in the positive active material particles and the cobalt in the coating layer being from 2.04 to 2.40, and the positive-electrode material having a tap density of 2.0 g/cmor higher. The invention further provides a process for producing the electrode material, a nickel electrode employing the electrode material, and an alkaline storage battery having the nickel electrode.