LITHIUM COMPOSITE METAL OXIDE AND POSITIVE ELECTRODE ACTIVE MATERIAL

Title:

LITHIUM COMPOSITE METAL OXIDE AND POSITIVE ELECTRODE ACTIVE MATERIAL

Document Type and Number:

WIPO Patent Application WO/2010/098187

Kind Code:

A1

Abstract:

Disclosed is a lithium composite metal oxide which is useful for a positive electrode active material that is capable of providing a nonaqueous electrolyte secondary battery having more excellent cycle characteristics, in particular, more excellent cycle characteristics during high-temperature operation at 60˚C or the like. Specifically disclosed is a lithium composite metal oxide which is characterized by being represented by the following formula (A). Lix(Mn1-y-zNiyFez)O2 (A) (In the formula, x is not less than 0.9 but not more than 1.3; y is 0.46 or more but less than 0.5; and z is 0 or more but less than 0.1.) Also disclosed are: a positive electrode active material which contains the lithium composite metal oxide; a positive electrode which contains the positive electrode active material; and a nonaqueous electrolyte secondary battery which comprises the positive electrode.

Inventors:

IMANARI YUICHIRO (JP)
PITTELOUD CEDRIC (JP)

Application Number:

PCT/JP2010/051588

Publication Date:

September 02, 2010

Filing Date:

February 04, 2010

Export Citation:

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Assignee:

SUMITOMO CHEMICAL CO (JP)
IMANARI YUICHIRO (JP)
PITTELOUD CEDRIC (JP)

International Classes:

H01M4/505; H01M4/525; H01M10/052; H01M50/451; H01M50/489

Domestic Patent References:

WO2002073718A1

2002-09-19

Foreign References:

JP2008235150A	2008-10-02
JP2000195516A	2000-07-14
JP2005008461A	2005-01-13
JP2000195516A	2000-07-14
JP2000030686A	2000-01-28
JPH10324758A	1998-12-08

Other References: