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Title:
POSITIVE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY CELL, METHOD FOR PREPARATION THEREOF AND NON-AQUEOUS ELECTROLYTE SECONDARY CELL
Document Type and Number:
WIPO Patent Application WO/2002/019449
Kind Code:
A1
Abstract:
A positive active material for a non-aqueous electrolyte secondary cell which comprises an oxide (X) containing lithium and at least one transition element of Co, Ni, Mn and Fe and an oxide (Y) represented by LiLnO¿2? wherein Ln represents at least one of Y, Sc and tri-valent rare earth metals; a method for preparing the positive active material; and a non-aqueous electrolyte secondary cell comprising a positive electrode having a positive active material powder containing the positive active material, an negative electrode and an alectrolyte. The positive active material effectively improves loading characteristics in a non-aqueous electrolyte secondary cell and thus allow the manufacture of a high capacity non-aqueous electrolyte secondary cell.

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Inventors:
YOSHIKAWA KENJI (JP)
FUJIWARA TETSU (JP)
MUROTA TADATOSHI (JP)
ONO SHIGERU (JP)
Application Number:
PCT/JP2001/007406
Publication Date:
March 07, 2002
Filing Date:
August 29, 2001
Export Citation:
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Assignee:
SANTOKU CORP (JP)
YOSHIKAWA KENJI (JP)
FUJIWARA TETSU (JP)
MUROTA TADATOSHI (JP)
ONO SHIGERU (JP)
International Classes:
H01M4/02; H01M4/36; H01M4/485; H01M4/505; H01M4/525; H01M10/05; (IPC1-7): H01M4/58; H01M4/02; H01M10/40
Foreign References:
JPH056779A1993-01-14
JPH056780A1993-01-14
JPH06150928A1994-05-31
JPH11219706A1999-08-10
JPH0950810A1997-02-18
JPH1116573A1999-01-22
JPH06290780A1994-10-18
JP2001283845A2001-10-12
JP2000340229A2000-12-08
JPH08162114A1996-06-21
US6248477B12001-06-19
US5750288A1998-05-12
Attorney, Agent or Firm:
Sakai, Hajime (Kojimachi 5-chome Chiyoda-ku Tokyo, JP)
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