| 摘要 |
PROBLEM TO BE SOLVED: To provide aprotic electrolyte thin film being capable of immobilizing electrolyte solution stable in a wide temperature range and controllable ion conductivity by impregnating and immobilizing aprotic electrolyte solution into polyolefin porous thin film containing living-polypropylene with terminal functional group. SOLUTION: Desirably 1-50wt.% of terminal denatured living-polymerization polypropylene is contained with polyolefin, that is, polypropylene, polyethylene and their composition, containing desirably not less than one wt.% of superhigh molecular weight component. After making this polyolefin composition to gelation form by heating dissolution into solvent of aliphatic, e.g. nonan, or cyclic hydrocarbon, and forming polyolefin porous thin film through elongation and thermal immobilization, aprotic electrolytic thin film is formed. By impregnating and immobilizing the electrolytic solution into this polyolefin thin film, an electric cell with high conductivity and excellent durability is obtained. |
