Title:
SECONDARY BATTERY ELECTRODE ACTIVE MATERIAL AND SECONDARY BATTERY PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2012/127919
Kind Code:
A1
Abstract:
Provided is a secondary battery electrode active material exhibiting favorable high rate discharge characteristics and having a large discharge capacity by means of limiting the amount of impurities in the electrode active material, which has a lithium-nickel-manganese complex oxide having a spinel structure as the primary component. Further provided is a secondary battery provided with the active material. The secondary battery electrode active material has a lithium-nickel-manganese complex oxide having a spinel structure as the primary component. The ratio of the main peak strength in the (200) plane of impurities having a halite structure with respect to the main peak strength in the (111) plane resulting from x-ray diffraction of the lithium-nickel-manganese complex oxide having a spinel structure is no greater than 3.0%, and the half band width of the diffraction line in the (111) plane of the lithium-nickel-manganese complex having a spinel structure is no greater than 0.135°.
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Inventors:
KAWAI TORU (JP)
Application Number:
PCT/JP2012/052916
Publication Date:
September 27, 2012
Filing Date:
February 09, 2012
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
KAWAI TORU (JP)
KAWAI TORU (JP)
International Classes:
H01M4/505; C01G53/00; H01M4/525
Foreign References:
| JPH08298115A | 1996-11-12 | |||
| JP2000264638A | 2000-09-26 | |||
| JP2004303710A | 2004-10-28 | |||
| JP2002316823A | 2002-10-31 | |||
| JP2009043546A | 2009-02-26 | |||
| JP2002158007A | 2002-05-31 |
Attorney, Agent or Firm:
KODA, Kazuyuki (JP)
Koda Kazuyuki (JP)
Koda Kazuyuki (JP)
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Claims: