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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 10056612 B1

PDFFull Text
Date of Patent:
Aug. 21, 2018

Filed:

May. 05, 2016

Lithium manganate particles for non-aqueous electrolyte secondary battery, process for producing the same, and nonaqueous electrolyte secondary battery

Applicant:

Toda Kogyo Corporation, Hiroshima-shi, Hiroshima-ken, JP;

Inventors:

Kazumichi Koga, Sanyo Onoda, JP;

Masayuki Uegami, Sanyo Onoda, JP;

Hiroaki Masukuni, Sanyo Onoda, JP;

Kazutoshi Matsumoto, Sanyo Onoda, JP;

Kazutoshi Ishizaki, Kitakyushu, JP;

Hideaki Sadamura, Kitakyushu, JP;

Assignee:

TODA KOGYO CORPORATION, Hiroshima, JP;

Attorney:

Nixon & Vanderhye P.C.

Primary Examiner:

Mark Kopec

Assistant Examiner:

Jaison P Thomas

Int. Cl.
CPC ...
H01B 1/08 (2006.01); H01M 4/505 (2010.01); H01M 4/04 (2006.01); H01M 4/485 (2010.01); C01G 45/02 (2006.01); C01G 45/12 (2006.01); H01M 10/0525 (2010.01); H01M 4/46 (2006.01);
U.S. Cl.
CPC ...
H01M 4/505 (2013.01); C01G 45/02 (2013.01); C01G 45/1242 (2013.01); H01B 1/08 (2013.01); H01M 4/0471 (2013.01); H01M 4/485 (2013.01); H01M 10/0525 (2013.01); C01P 2002/52 (2013.01); C01P 2002/77 (2013.01); C01P 2004/03 (2013.01); C01P 2004/61 (2013.01); C01P 2006/12 (2013.01); C01P 2006/80 (2013.01); H01M 4/46 (2013.01);
Abstract

This invention provides lithium manganate which has a high output and is excellent in high-temperature stability. This invention relates to lithium manganate particles which are produced by mixing a lithium compound, a manganese compound, a Y compound and an A compound and then calcining the resulting mixture, and have a composition represented by the following chemical formula 1 and an average secondary particle diameter (D) of 1 to 15 μm, in which Y is at least one element selected from the group consisting of Al and Mg; A is a sintering aid element having a melting point of not higher than 850° C.; x and y satisfy 0.03≤x≤0.15 and 0≤y≤0.20, respectively; z is in the range of 0 to 2.5 mol % based on Mn, wherein the lithium manganate particles have a sulfur content of not more than 100 ppm.LiMnYOA  (Chemical Formula 1)

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