COMPOSITION FOR POLYMERIC SOLID ELECTROLYTE HAVING UNIFORM PORE DISTRIBUTION, HIGH ION CONDUCTIVITY AND BROAD POTENTIAL WINDOW, AND METHOD FOR PRODUCING POLYMERIC SOLID ELECTROLYTE BY USING THE SAME

摘要

PURPOSE: Provided is a composition for forming a polymeric solid electrolyte for a lithium secondary battery, which has high ion conductivity at room temperature and is hardly deformed even after repeated charge/discharge cycles. CONSTITUTION: The composition for a polymeric solid electrolyte comprises a trimethylolpropane derivative represented by the following formula 1, a compound represented by the following formula 2 as a hydrophilic polymer, and a blowing agent. In formula 1, R1 is H or CH3. In formula 2, R2 is selected from the group consisting of 2-pyrrolidinonyl, OCOCH3, OCOCH=CH2, C6H5, CN and SO2CH=CH2; and n is a number of 10-2000. Particularly, the blowing agent is at least one selected from the group consisting of dibutyl phthalate, diheptyl phthalate, dioctyl phthalate and diisodecyl phthalate.