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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.:

US 9112220 B1

PDFFull Text
Date of Patent:
Aug. 18, 2015

Filed:

Jul. 26, 2012

Nickel hydrogen rechargeable battery

Applicants:

Masaru Kihara, Takasaki, JP;

Masaaki Takei, Takasaki, JP;

Tetsuya Yamane, Takasaki, JP;

Inventors:

Masaru Kihara, Takasaki, JP;

Masaaki Takei, Takasaki, JP;

Tetsuya Yamane, Takasaki, JP;

Assignee:

FDK CORPORATION, Tokyo, JP;

Attorney:

Marshall, Gerstein & Borun LLP

Primary Examiner:

Laura Weiner

Int. Cl.
CPC ...
H01M 4/32 (2006.01); C22C 19/03 (2006.01); H01M 4/24 (2006.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/52 (2010.01); H01M 4/62 (2006.01); H01M 10/34 (2006.01); C01B 3/00 (2006.01); C22C 1/02 (2006.01); C22C 19/00 (2006.01); C22C 28/00 (2006.01); C22C 1/04 (2006.01);
U.S. Cl.
CPC ...
H01M 4/32 (2013.01); C01B 3/0057 (2013.01); C22C 1/02 (2013.01); C22C 1/023 (2013.01); C22C 1/0433 (2013.01); C22C 19/00 (2013.01); C22C 19/03 (2013.01); C22C 28/00 (2013.01); H01M 4/242 (2013.01); H01M 4/362 (2013.01); H01M 4/383 (2013.01); H01M 4/52 (2013.01); H01M 4/624 (2013.01); H01M 10/345 (2013.01); Y02E 60/124 (2013.01); Y02E 60/327 (2013.01);
Abstract

A nickel hydrogen rechargeable battery has a positive electrode and a negative electrode. The positive electrode includes positive-electrode active material made of nickel hydroxide particles in which magnesium is dissolved, and the negative electrode includes rare earth-Mg—Ni-based hydrogen storage alloy powder. At least either one of the negative and positive electrodes includes as additive at least one selected from a group including zinc and zinc compounds. The content of the additive ranges from 0.2 to 1.5 part by weight per 100 parts by weight of hydrogen storage alloy in the negative electrode, and ranges from 0.3 to 1.5 part by weight per 100 parts by weight of positive-electrode active material in the positive electrode.

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