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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 8852811 B1

PDFFull Text
Date of Patent:
Oct. 07, 2014

Filed:

Sep. 16, 2009

Process for producing lithium manganate particles and non-aqueous electrolyte secondary battery

Applicants:

Kazumichi Koga, Yamaguchi-ken, JP;

Masayuki Uegami, Yamaguchi-ken, JP;

Hiroaki Masukuni, Yamaguchi-ken, JP;

Kazutoshi Matsumoto, Yamaguchi-ken, JP;

Inventors:

Kazumichi Koga, Yamaguchi-ken, JP;

Masayuki Uegami, Yamaguchi-ken, JP;

Hiroaki Masukuni, Yamaguchi-ken, JP;

Kazutoshi Matsumoto, Yamaguchi-ken, JP;

Assignee:

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

Attorney:

Nixon & Vanderhye, P.C.

Primary Examiner:

Mark Kopec

Assistant Examiner:

Haidung Nguyen

Int. Cl.
CPC ...
H01M 4/505 (2010.01); C04B 35/628 (2006.01); C01G 45/02 (2006.01); C04B 35/626 (2006.01); C04B 35/01 (2006.01); H01M 4/485 (2010.01); H01M 10/052 (2010.01); C01G 45/12 (2006.01); H01M 4/525 (2010.01); H01M 4/131 (2010.01);
U.S. Cl.
CPC ...
H01M 10/052 (2013.01); C04B 2235/5463 (2013.01); C04B 35/62813 (2013.01); C01G 45/02 (2013.01); C04B 2235/3275 (2013.01); H01M 4/525 (2013.01); H01M 4/505 (2013.01); C04B 2235/5481 (2013.01); C04B 2235/81 (2013.01); C04B 35/62675 (2013.01); C04B 35/62886 (2013.01); C04B 2235/3203 (2013.01); C04B 2235/3409 (2013.01); C04B 35/62805 (2013.01); C04B 2235/3206 (2013.01); C04B 2235/3232 (2013.01); C01P 2004/51 (2013.01); C01P 2006/12 (2013.01); C04B 35/016 (2013.01); C04B 2235/3241 (2013.01); C04B 2235/5436 (2013.01); H01M 4/485 (2013.01); C04B 2235/442 (2013.01); Y02E 60/122 (2013.01); C04B 2235/3217 (2013.01); H01M 4/131 (2013.01); C04B 2235/3263 (2013.01); C01P 2004/61 (2013.01); C01P 2004/03 (2013.01); C04B 2235/3267 (2013.01); C04B 35/62802 (2013.01); C04B 2235/3272 (2013.01); C01P 2006/40 (2013.01); C04B 2235/3279 (2013.01); C01G 45/1235 (2013.01); C04B 2235/528 (2013.01);
Abstract

According to the present invention, there is provided a process for producing lithium manganate particles having a high output and an excellent high-temperature stability. The present invention relates to a process for producing lithium manganate particles comprising the steps of mixing a lithium compound, a manganese compound and a boron compound with each other; and calcining the resulting mixture in a temperature range of 800 to 1050° C., wherein an average particle diameter (D) of the boron compound is not more than 15 times an average particle diameter (D) of the manganese compound, and wherein the lithium manganate particles have a composition represented by the following chemical formula:LiMnY1O+Bin which Y1 is at least one element selected from the group consisting of Ni, Co, Mg, Fe, Al, Cr and Ti, and x and y satisfy the conditions of 0.03≦x≦0.15 and 0≦y≦0.20, respectively.

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