Title:
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2003092109
Kind Code:
A
Abstract:
To reduce the self discharge rate by increasing the particle size of a positive active material in a nonaqueous electrolyte secondary battery.
In the nonaqueous electrolyte secondary battery having a positive electrode using an inorganic compound as a positive active material, a negative electrode, and a nonaqueous electrolyte, as the positive active material, a material prepared by baking granular granulated material of a row material powder comprising an inorganic compound is used. As the negative electrode, the use of a carbon material capable of doping and undoping lithium is preferable. A binder is mixed to the row material powder, and the preparation of the granular granulated material from this mixture is preferable.
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Inventors:
ENDO TAKUYA
NISHI MIO
OZAWA KAZUNORI
MIURA YASUO
SEKAI KOJI
KATO NAOYUKI
YAMAMOTO YOSHIKATSU
SATO SUSUMU
NISHI MIO
OZAWA KAZUNORI
MIURA YASUO
SEKAI KOJI
KATO NAOYUKI
YAMAMOTO YOSHIKATSU
SATO SUSUMU
Application Number:
JP2002211491A
Publication Date:
March 28, 2003
Filing Date:
April 03, 1992
Export Citation:
Assignee:
SONY CORP
International Classes:
H01M10/05; H01M4/525; H01M10/0525; H01M10/0566; (IPC1-7): H01M4/58; H01M4/02; H01M10/40
Attorney, Agent or Firm:
Noboru Tajime (1 person outside)