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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 9391325 B1

PDFFull Text
Date of Patent:
Jul. 12, 2016

Filed:

May. 11, 2006

Positive electrode active material, production method thereof and non-aqueous electrolyte secondary battery

Applicants:

Tsutomu Ohzuku, Nara, JP;

Hiroshi Yoshizawa, Osaka, JP;

Masatoshi Nagayama, Osaka, JP;

Hizuru Koshina, Osaka, JP;

Inventors:

Tsutomu Ohzuku, Nara, JP;

Hiroshi Yoshizawa, Osaka, JP;

Masatoshi Nagayama, Osaka, JP;

Hizuru Koshina, Osaka, JP;

Assignees:

Panasonic Corporation, Osaka, JP;

Osaka City University, Osaka, JP;

Attorney:

McDermott Will & Emery LLP

Primary Examiner:

Jacob Marks

Int. Cl.
CPC ...
H01M 4/02 (2006.01); H01M 4/505 (2010.01); C01G 23/00 (2006.01); C01G 45/12 (2006.01); C01G 49/00 (2006.01); C01G 51/00 (2006.01); C01G 53/00 (2006.01); H01M 4/131 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 2/16 (2006.01); H01M 4/1391 (2010.01); H01M 4/485 (2010.01); H01M 10/0569 (2010.01); H01M 10/42 (2006.01);
U.S. Cl.
CPC ...
H01M 4/505 (2013.01); C01G 23/005 (2013.01); C01G 45/1242 (2013.01); C01G 49/009 (2013.01); C01G 51/54 (2013.01); C01G 53/54 (2013.01); H01M 4/131 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); C01P 2002/52 (2013.01); C01P 2002/72 (2013.01); C01P 2002/76 (2013.01); C01P 2002/77 (2013.01); C01P 2002/82 (2013.01); C01P 2002/88 (2013.01); C01P 2004/03 (2013.01); C01P 2004/62 (2013.01); C01P 2006/40 (2013.01); H01M 2/1653 (2013.01); H01M 4/1391 (2013.01); H01M 4/485 (2013.01); H01M 10/0569 (2013.01); H01M 2004/021 (2013.01); H01M 2010/4292 (2013.01); Y02E 60/122 (2013.01); Y02P 70/54 (2015.11);
Abstract

In order to provide a 3V level non-aqueous electrolyte secondary battery with a flat voltage and excellent cycle life at a high rate with low cost, the present invention provides a positive electrode represented by the formula: Li[Me]O, wherein 0≦α<0.4, 0≦x<2, and Me is a transition metal containing Mn and at least one selected from the group consisting of Ni, Cr, Fe, Co and Cu, said active material exhibiting topotactic two-phase reactions during charge and discharge.

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