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Title:
POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2001118567
Kind Code:
A
Abstract:

To provide a positive electrode for a lithium secondary battery having superior cycle characteristic configured, such that the coating ratio of a surface of a positive electrode active material of a binder and a conductive agent is not under a certain ratio by using stable positive active material.

An electrode for a lithium secondary battery formed by binding a positive electrode active material 1, including a lithium transition metal compound oxide and a conductive agent 2 as a binder 3, is configured so that before charging and discharging, at least 80% of a surface of the positive electrode active material 1 is coated on one side of the conductive agent 2 and the binder 3 and after exceeding 100 cycles of charging and discharging of maximum current amount, capable of charging and discharging reversibly at 60°C, at least 50% of a surface of the positive electrode active material 1 is coated in one side of the conductive agent 2 and the binder 3.


Inventors:
SASAKI ITSUKI
UKIYOU YOSHIO
NAKANO HIDEYUKI
Application Number:
JP29874199A
Publication Date:
April 27, 2001
Filing Date:
October 20, 1999
Export Citation:
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Assignee:
TOYOTA CENTRAL RES & DEV
International Classes:
H01M4/1391; H01M4/36; H01M4/505; H01M4/525; H01M10/05; H01M10/0525; (IPC1-7): H01M4/02; H01M10/40
Domestic Patent References:
JPH10188955A1998-07-21
JP2000058063A2000-02-25
JPH10149829A1998-06-02
JPH10302766A1998-11-13
JPH10284057A1998-10-23
JPH0992265A1997-04-04
JPH10321224A1998-12-04
Attorney, Agent or Firm:
Hiroshi Okawa