Title:
非水電解液二次電池
Document Type and Number:
Japanese Patent JP4092757
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make a nonaqueous solvent flame-resistant and to improve the cycle characteristic of a battery by providing a positive electrode, a negative electrode and a nonaqueous electrolyte with electrolyte disolved in a nonaqueous solvent, including a specific phosphate compound and a specific phosphagen compound as the nonaqueous solvent. SOLUTION: A nonaqueous solvent to be used contains a phosphate compound expressed by formula I and a phosphagen compound expressed by formula II. In the formula, R1 -R4 represent substituted or nonsubstituted cyclic aromatic groups, and A represents a nonsubstituted cyclic aromatic group or a heterocycle. In the formula, R5 , R6 represent a straight chain or branched alkyl group, a cyclic saturated alkyl group or an alkylene group, and (n) is an integer of 1-100. Flame resistance is displayed because of containing the phosphate compound in the nonaqueous solvent, and the cycle characteristic of a battery is improved since containing the phosphagen compound is contained. In this nonaqueous electrolyte battery, a wound layer body with a positive electrode, and a negative electrode wound through a separator is charged in a battery can.
Inventors:
Sam Hui
Shigeru Fujita
Ken Segawa
Shigeru Fujita
Ken Segawa
Application Number:
JP36106397A
Publication Date:
May 28, 2008
Filing Date:
December 26, 1997
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H01M10/05; H01M10/052; H01M10/0525; H01M10/0569
Domestic Patent References:
| JP9082293A |
Foreign References:
| WO1997044842A1 | ||||
| WO1997009053A1 |
Attorney, Agent or Firm:
Akira Koike
Eiichi Tamura
Seiji Iga
Eiichi Tamura
Seiji Iga