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|1. (WO2016053041) GEL POLYMER ELECTROLYTE AND LITHIUM SECONDARY BATTERY CONTAINING SAME|
|Applicants:||LG CHEM, LTD.
|Inventors:||PARK, Sol Ji
AHN, Kyoung Ho
OH, Jeong Woo
LEE, Chul Haeng
JUNG, Yi Jin
|Title:||GEL POLYMER ELECTROLYTE AND LITHIUM SECONDARY BATTERY CONTAINING SAME|
The present invention relates to a composition for a gel polymer electrolyte containing an electrolyte solvent, lithium salt, a polymerisation initiator and a mixed compound of a first compound and a second compound; and a lithium secondary battery comprising a positive electrode, a negative electrode, a separation membrane and a gel polymer electrolyte. A lithium secondary battery is provided, wherein the gel polymer electrolyte is formed by polymerising the gel polymer electrolyte composition. The gel polymer electrolyte composition of the present invention includes a mixed compound of a first compound and a second compound, wherein the first compound is an amine-based compound including polyethylene glycol as a functional group and the second compound is an epoxy-based compound; and can thereby easily induce a hopping phenomenon when applied to a lithium secondary battery, improve battery life, exhibit excellent storage at high temperatures and improve battery capacity.