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COMPOSITION FOR FORMING POLYMERIC SOLID ELECTROLYTE WHICH PREVENTS ELECTROLYTE LEAKAGE AND HAS HIGH MECHANICAL STRENGTH AND ION CONDUCTIVITY, AND LITHIUM SECONDARY BATTERY USING POLYMERIC SOLID ELECTROLYTE FORMED THEREFROM
COMPOSITION FOR FORMING POLYMERIC SOLID ELECTROLYTE WHICH PREVENTS ELECTROLYTE LEAKAGE AND HAS HIGH MECHANICAL STRENGTH AND ION CONDUCTIVITY, AND LITHIUM SECONDARY BATTERY USING POLYMERIC SOLID ELECTROLYTE FORMED THEREFROM
PURPOSE: Provided is a composition for forming a polymeric solid electrolyte which has high ion conductivity and excellent mechanical strength sufficient to be processed into a desired shape easily and is free from electrolyte leakage, and thus gives lithium secondary batteries having excellent mechanical and electrochemical properties. CONSTITUTION: The composition for forming a polymeric solid electrolyte comprises a polymerizable compound, a crosslinking agent, a polymerization initiator and a lithium salt, wherein the polymerizable compound and the crosslinking agent are a compound represented by the following formula 1 and a compound represented by the following formula 2, respectively. In formulae 1 and 2, R1 is H or CH3; each of R2 and R3 is independently selected from the group consisting of H, CH3, C2H5, propyl, dialkyl aminopropyl having the formula of -C3H6N(R')2, wherein R' is a C1-C5 alkyl and hydroxyethyl(CH2CH2OH); n1 is a number of 7-50; each of R4 and R5 is independently selected from H and CH3; and n2 is a number of 1-30.
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