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

摘要

The present invention provides a composition for forming a polymer solid electrolyte and a lithium secondary battery employing the polymer solid electrolyte formed therefrom. The composition for forming a polymer solid electrolyte of the present invention includes a solvent containing a polymerizable compound, a crosslinking agent, a polymerization initiator and an inorganic salt, wherein the polymerizable compound is a vinyl polymer, and the crosslinking agent is polyethylene glycol di (meth) acrylic acid ester. It is characterized by that. The polymer solid electrolyte of the present invention does not leak electrolyte at all, has a high mechanical strength and is easy to be processed into a desired shape, and has high ion conductivity even in a low temperature region. Therefore, when the battery is manufactured using such an electrolyte, a lithium secondary battery having excellent mechanical and electrochemical characteristics with little deterioration due to pressurization and thermal changes in the battery manufacturing process can be obtained.