Title:
LITHIUM ION SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2006/101138
Kind Code:
A1
Abstract:
Active material particles of a lithium ion secondary battery contains a first lithium-nickel complex oxide: LixNi1-y-zCoyMezO2 (wherein 0.85 ≤ x ≤ 1.25, 0 < y ≤ 0.5, 0 ≤ z ≤ 0.5, 0 < y+z ≤ 0.75, and element Me represents at least one substance selected from the group consisting of Al, Mn, Ti, Mg and Ca) which constitutes at least the core portion of each particle. The surface portion of each active material particle contains a nickel oxide having an NaCl-type crystal structure or a second lithium-nickel complex oxide, and further contains an element M which is not included in the crystal structure of the first lithium-nickel complex oxide. The element M is at least one element selected from the group consisting of Al, Mn, Mg, B, Zr, W, Nb, Ta, In, Mo and Sn.
Inventors:
NAKURA KENSUKE
Application Number:
PCT/JP2006/305730
Publication Date:
September 28, 2006
Filing Date:
March 22, 2006
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
NAKURA KENSUKE
NAKURA KENSUKE
International Classes:
H01M4/52; H01M4/525; H01M4/139; H01M4/50; H01M4/505; H01M10/0525; H01M10/36
Foreign References:
| JP2004253305A | 2004-09-09 | |||
| JP2004127694A | 2004-04-22 | |||
| JP2004119110A | 2004-04-15 | |||
| JP2003257434A | 2003-09-12 | |||
| JP2003173775A | 2003-06-20 | |||
| JP2003123750A | 2003-04-25 | |||
| JP2002075367A | 2002-03-15 | |||
| JP2001143708A | 2001-05-25 | |||
| JPH1116566A | 1999-01-22 | |||
| JPH08279357A | 1996-10-22 | |||
| JPH08250120A | 1996-09-27 | |||
| JP3172388B2 | 2001-06-04 |
Attorney, Agent or Firm:
Ishii, Kazuo (3-6 Kitahama 2-chome, Chuo-k, Osaka-shi Osaka 41, JP)
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