Title:
非プロトン性電解質薄膜、その製造方法およびそれを用いた二次電池
Document Type and Number:
Japanese Patent JP4486168
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a thin aprotic electrolyte film which can be easily made thin or made to have a large area, is excellent in retention of an aprotic electolyte soln. in a wide temp. range, and has improved long-term stability and mechanical strengths by fixing an aprotic electrolyte soln. by using the solubility of a polymer formed by the graft polymn. of a monomer onto a porous polyolefin film. SOLUTION: A monomer [e.g. (meth)acrylic acid, a (meth)acrylic ester, or acrylamide (or its deriv.)] which gives a polymer soluble in a solvent of an aprotic electrolyte soln. is grafted by a plasma or radiation graft polymn. onto a porous polyolefin film having a thickness of 0.1-50μm, an average pore size of 0. 005-1 μm, a porosity of 30-95%, and a breaking strength of 200kg/cm<2> or higher. An aprotic electrolyte soln. is impregnated into the polyolefin film after the graft polymn. and is fixed, thus giving the objective thin film.
Inventors:
Koichi Kono
Kotaro Takita
Kaimai Education
Kotaro Takita
Kaimai Education
Application Number:
JP35190396A
Publication Date:
June 23, 2010
Filing Date:
December 11, 1996
Export Citation:
Assignee:
Tonen Chemical Co., Ltd.
International Classes:
C08J9/00; C08J9/42; C08F255/02; H01G9/025; H01G11/52; H01G11/56; H01G11/84; H01M6/18; H01M6/22; H01M10/05; H01M10/0565
Attorney, Agent or Firm:
Kohei Kubota