Title:
LITHIUM-CONTAINING COMPLEX OXIDE AND ITS PRODUCING METHOD
Document Type and Number:
WIPO Patent Application WO/2003/084873
Kind Code:
A1
Abstract:
Means for stably supplying a lithium-containing complex oxide exhibiting a high performance as a positive plate active material of a lithium secondary cell or the like and having a high tap density. Granular lithium-containing complex oxide such as lithium manganese complex oxide comprises “complex oxide grains produced by integrating lithium-rich material grains discontinuously grown during a firing reaction with the surfaces of the base grains by sintering. The number of complex oxide grains is 50 or less per gram of the complex oxide grains. Metal oxide such as manganese oxide and lithium carbonate of an average particle size of 5 µm or less are mixed by means of a mixer which grinds and mixes particles by using shearing force and heating and firing them at a rate of temperature rise of 50°C/h or less, thus producing the lithium-containing complex oxide.
Inventors:
KAJIYA YOSHIO (JP)
TASAKI HIROSHI (JP)
TASAKI HIROSHI (JP)
Application Number:
PCT/JP2003/000249
Publication Date:
October 16, 2003
Filing Date:
January 15, 2003
Export Citation:
Assignee:
NIKKO MATERIALS CO LTD (JP)
JAPAN ENERGY CORP (JP)
KASHIMA OIL (JP)
PETOCA MATERIALS LTD (JP)
KAJIYA YOSHIO (JP)
TASAKI HIROSHI (JP)
JAPAN ENERGY CORP (JP)
KASHIMA OIL (JP)
PETOCA MATERIALS LTD (JP)
KAJIYA YOSHIO (JP)
TASAKI HIROSHI (JP)
International Classes:
C01G45/00; C01G45/12; H01M4/36; H01M4/485; H01M4/505; H01M4/58; H01M10/05; H01M4/02; (IPC1-7): C01G45/00; H01M4/58
Foreign References:
| JPH11185754A | 1999-07-09 | |||
| JP2000143246A | 2000-05-23 | |||
| JP2000281349A | 2000-10-10 | |||
| JP2001307729A | 2001-11-02 | |||
| JPH05198301A | 1993-08-06 |
Attorney, Agent or Firm:
Imai, Takeshi (Higashiikebukuro 1-chom, Toshima-ku Tokyo, JP)
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