Title:
NONAQUEOUS SECONDARY BATTERY AND PORTABLE DEVICE USING THE SAME
Document Type and Number:
Japanese Patent JP3914048
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a nonaqueous secondary battery that has excellent overcharge safety and can secure storage reliability because gas hardly occurs at high temperature storage.
SOLUTION: In the nonaqueous secondary battery, comprising a positive electrode, a negative electrode, and a nonaqueous electrolyte solution, the nonaqueous electrolyte solution contains a compound A in which a halogen group is bonded to a benzene ring, and an aromatic and/or heterocyclic compound B which is oxidized at a lower potential than that of this compound A, and the content of the compound A with respect to the whole nonaqueous electrolyte solution is not less than 1 mass% nor more than 15 mass% and the content of the compound B is not less than 0.005 mass% nor more than 3 mass%.
Inventors:
Fusatsugu Kita
Hideo Sakata
Haruki Kamisha
Hideo Sakata
Haruki Kamisha
Application Number:
JP2001389967A
Publication Date:
May 16, 2007
Filing Date:
December 21, 2001
Export Citation:
Assignee:
Hitachi Maxell Co., Ltd.
International Classes:
H01M10/05; H01M4/13; H01M4/62; H01M10/0567; H01M6/10; H01M6/16; H01M10/42; H01M10/44; H01M50/119; (IPC1-7): H01M10/40; H01M4/02; H01M4/62
Domestic Patent References:
| JP11040193A | ||||
| JP9171840A | ||||
| JP2000156243A | ||||
| JP2003100344A | ||||
| JP2003100345A | ||||
| JP2001015155A |
Attorney, Agent or Firm:
Ikeuchi, Sato & Partners