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Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY CELLS, MANUFACTURING METHOD THEREOF, AND LITHIUM SECONDARY CELL
Document Type and Number:
WIPO Patent Application WO/2011/007750
Kind Code:
A1
Abstract:
Disclosed is a positive electrode active material for lithium secondary cells which is characterized by containing LiBiO2 and a lithium complex oxide represented by equation (1): LixNi1-y-zCoyMnzO2 (wherein x satisfies 0.98≦x≦1.20, y satisfies 0＜y≦0.5, z satisfies 0＜z≦0.5, and ｙ＋ｚ＜1). The positive electrode active material for lithium secondary cells comprises a lithium-nickel-cobalt-manganese complex oxide that can impart particularly excellent cycle characteristics to a lithium secondary cell. Further disclosed are an industrially advantageous method for producing said positive electrode active material, and a lithium secondary cell with particularly excellent cycle characteristics that comprises said positive electrode active material.

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Inventors:
FUKUCHI MINORU (JP)
ARASE RYUYA (JP)
Application Number:
PCT/JP2010/061754
Publication Date:
January 20, 2011
Filing Date:
July 12, 2010
Export Citation:
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Assignee:
NIPPON CHEMICAL IND (JP)
FUKUCHI MINORU (JP)
ARASE RYUYA (JP)
International Classes:
H01M4/525; H01M4/36; H01M4/485; H01M4/505
Foreign References:
JP2005251717A2005-09-15
JP2005038629A2005-02-10
JPH0855624A1996-02-27
Attorney, Agent or Firm:
NIPPON CHEMICAL INDUSTRIAL CO., LTD. (JP)
Nippon Chemical Industrial Co., Ltd. (JP)
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