Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS SECONDARY CELL, POSITIVE ELECTRODE FOR NON-AQUEOUS SECONDARY CELL USING SAME, NON-AQUEOUS SECONDARY CELL, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2014/181455
Kind Code:
A1
Abstract:
This positive electrode active material for a non-aqueous secondary cell is characterized in that the positive electrode active material is represented by a composition formula: xLi2MnMcO3 - (1 - x)LiNiaMnbMcO2 (in the formula, letters x, a, b, c have the following relations: 0.2 < x < 0.8, 0.5 < a < 1, 0 < b < 0.5, c ≤ 0.02, a + b + c = 1, and Mc represents a metallic element), and a ratio (IN/I(104)) of diffraction peak intensity (I(104)) on a (104) surface as in an X-ray diffraction measurement to a maximum intensity (IN) within a range of an angle 0.3-2o lower than a diffraction angle of the diffraction peak to which the (104) surface belongs is 0.080 or less. As a result, it is possible to provide a positive electrode active material for a non-aqueous secondary battery which is a layered solid solution and has low resistance.
Inventors:
NAKABAYASHI TAKASHI (JP)
TAKAHASHI SHIN (JP)
GUNJI AKIRA (JP)
KONISHI HIROAKI (JP)
FENG XIAOLIANG (JP)
FURUTSUKI SHO (JP)
TOOYAMA TATSUYA (JP)
KOBAYASHI MITSURU (JP)
TOKORO HISATO (JP)
TAKANO SHUICHI (JP)
KITAGAWA KAN (JP)
TAKAHASHI SHIN (JP)
GUNJI AKIRA (JP)
KONISHI HIROAKI (JP)
FENG XIAOLIANG (JP)
FURUTSUKI SHO (JP)
TOOYAMA TATSUYA (JP)
KOBAYASHI MITSURU (JP)
TOKORO HISATO (JP)
TAKANO SHUICHI (JP)
KITAGAWA KAN (JP)
Application Number:
PCT/JP2013/063108
Publication Date:
November 13, 2014
Filing Date:
May 10, 2013
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H01M4/505; H01M4/525
Domestic Patent References:
| WO2012111614A1 | 2012-08-23 |
Foreign References:
| JP2009158415A | 2009-07-16 | |||
| JP2013080603A | 2013-05-02 | |||
| JP2013004234A | 2013-01-07 | |||
| JP2011029000A | 2011-02-10 | |||
| JP2004303710A | 2004-10-28 | |||
| JP2008137837A | 2008-06-19 | |||
| JP2011066000A | 2011-03-31 |
Other References:
J.KIM ET AL.: "Electrochemical and Structural Properties of xLi2M'O3 · (1-x) LiMn0.5Ni0.5O2 Electrodes for Lithium Batteries", CHEM. MATER., vol. 16, 2004, pages 1996 - 2006
Attorney, Agent or Firm:
INOUE Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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