Title:
【発明の名称】酢酸ビニル系共重合体、これを含むゲル高分子電解質組成物およびリチウム高分子二次電池
Document Type and Number:
Japanese Patent JP2872223
Kind Code:
B2
Abstract:
A gel polymer electrolyte according to the present invention comprises a polymer selected from the group consisting of vinyl acetate copolymer, poly(ethylene/vinylacetate/carbon oxide: EVACM), and poly(ethylene/vinylacetate/maleic acid anhydride: EVAMA); an inorganic filler; and a liquid electrolyte that a lithium salt is dissolved in an aprotic solvent. It is preferable that the polymer material in a gel polymer electrolyte according to the present invention is in the range of 20 to 30% by weight, the inorganic material filler is in the range of 5 to 20% by weight, and the liquid electrolyte is in the range of 60 to 80 % by weight. As a specific functional group which has a high compatibility with a liquid electrolyte in the present invention is contained in the polymer material, a lithium ion becomes to move with ease in electrolyte, and the ionic conductivity is over 0.5 mS/cm which is the demand level of a gel polymer electrolyte. Also, it provides the gel polymer electrolyte material with a high film formability, a good property of containing an electrolyte, a good adhesibility, and a good mechanical strength.
Inventors:
OO BUU KEN
KIMU YAN RO
KIMU DON UON
BII CHAN UU
KIMU YAN RO
KIMU DON UON
BII CHAN UU
Application Number:
JP15072198A
Publication Date:
March 17, 1999
Filing Date:
May 14, 1998
Export Citation:
Assignee:
SAMUSON JENERARU CHEM CO LTD
International Classes:
C08L31/04; C08F210/02; C08F218/08; C08F220/12; C08F222/06; C08F226/10; C08G67/02; C08K3/00; C08L23/08; C08L33/06; C08L33/08; C08L35/00; C08L39/06; C08L73/00; H01B1/12; H01M10/05; H01M10/052; H01M10/0565; H01M10/26; (IPC1-7): C08F220/12; C08F210/02; C08F218/08; C08F222/06; C08F226/10; C08G67/02; C08L23/08; C08L31/04; C08L33/06; C08L35/00; C08L39/06; C08L73/00; H01B1/12; H01M10/40
Attorney, Agent or Firm:
Fuse Yukio (2 outside)