| 摘要 |
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. |
