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Title:
POSITIVE ELECTRODE ACTIVE MATERIAL, ITS MANUFACTURING METHOD AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2003323893
Kind Code:
A
Abstract:

To provide a 3V-grade nonaqueous electrolyte secondary battery at a low cost, excellent evenness in voltage and high-rate cycle life.

A positive electrode active material, which is expressed in a composition expression: Li2±α[Me]4O8-x (in the expression, 0≤α<0.4, 0≤x<2, Me is a transition metal element including Mn and at least one kind selected from a series composed of Ni, Cr, Fe, Co and Cu) and of which reaction in a charging/discharging area is a two-phase reaction, is used for a positive electrode.


Inventors:
KOTSUKI TSUTOMU
YOSHIZAWA KOJI
NAGAYAMA MASATOSHI
KOSHINA HIDE
Application Number:
JP2002129134A
Publication Date:
November 14, 2003
Filing Date:
April 30, 2002
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
OSAKA CITY
International Classes:
H01M10/05; C01G37/00; C01G45/00; C01G49/00; C01G51/00; C01G53/00; H01M4/131; H01M4/485; H01M4/505; H01M4/525; H01M10/0525; H01M10/0569; H01M4/66; H01M10/42; (IPC1-7): H01M4/58; H01M10/40
Attorney, Agent or Firm:
Kazuo Ishii (1 person outside)