Title:
ゲル組成物
Document Type and Number:
Japanese Patent JP4296641
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To retain a large quantity of an organic electrolytic solution and to reduce the deterioration degree of a resin by including a vinylidene fluoride- chlorofluoroethylene copolymer obtained by copolymerizing chlorotrifluoroethylene in a specified ratio and an organic solvent capable of dissolving a lithium salt. SOLUTION: A vinylidene-chlorotrifluoroethylene copolymer that is one component of a gel composition is obtained by copolymerizing 1-7 wt.% of chlorotrifluoroethylene, and it preferably has the number average molecular weight of about 200,000-700,000. The organic solvent for dissolving a lithium salt compound preferably consists of a carbonate, and this is obtained by adding a low viscosity solvent to a high dielectric constant solvent and regulating the electrolytic viscosity. For example, ethylene carbonate or propylene carbonate is used as the high dielectric constant solvent, and dimethylcarbonate or diethylcarbonate is used as the low viscosity solvent.
Inventors:
Atsushi Kanega
Takashi Enokida
Takashi Enokida
Application Number:
JP20881699A
Publication Date:
July 15, 2009
Filing Date:
July 23, 1999
Export Citation:
Assignee:
UNIMATEC CO.,LTD.
International Classes:
H01M10/05; C08F214/22; C08L27/16; H01M10/052; H01M10/0565
Domestic Patent References:
| JP11035765A | ||||
| JP11191318A | ||||
| JP11130821A |
Foreign References:
| WO1999034372A1 |
Attorney, Agent or Firm:
Toshio Yoshida
Kazuko Yoshida
Kazuko Yoshida