Title:
【発明の名称】リチウムバッテリ用正極
Document Type and Number:
Japanese Patent JP2000515672
Kind Code:
A
Abstract:
A positive electrode active material for high voltage lithium battery which is represented by general formula LixMn2-yMyO4 (M: a 2-valency metal (Ni, Co, Fe, Mg, Zn), with 0.45 = y = 0.60, 0= x = 1) having cubic spinel structure of lattice constant within 8.190 angstrom. Such an active material is manufactured by employing sol-gel process wherein one of inorganic salt, hydroxide and organic acid salt of lithium or a mixture of these for Li, one of inorganic salt and organic acid salt of manganese or a mixture of these for Mn, and one of inorganic salt and organic salt of the selected metal or a mixture of these for M are used as the starting materials for synthesis, ammonia water is added to the solutions of these starting materials in alcohol or water to obtain gelatinous material and the gelatinous material thus obtained is fired; or by employing solid phase reaction, comprising the steps of: firing lithium compound, manganese compound and metal compound; and refiring the fired material after pressurizing it at least once or more.
Inventors:
Amin Karyl
Hideo Yasuda
Yuko Fujita
Hideo Yasuda
Yuko Fujita
Application Number:
JP50677198A
Publication Date:
November 21, 2000
Filing Date:
July 22, 1996
Export Citation:
Assignee:
Nippon Battery Co., Ltd.
International Classes:
C01G49/00; C01G45/00; C01G51/00; C01G53/00; H01M4/02; H01M4/04; H01M4/48; H01M4/50; H01M4/58; H01M10/36; H01M10/40; H01M4/52; (IPC1-7): H01M4/58; C01G45/00; C01G49/00; C01G51/00; C01G53/00; H01M4/02; H01M4/04; H01M10/40
Attorney, Agent or Firm:
Noriaki Miyakoshi (1 person outside)