| abstract |
The present invention relates to a composition for a gel polymer electrolyte containing an electrolyte solution solvent, a lithium salt, a polymerization initiator, and a mixed compound of a first compound and a second compound, and a lithium battery containing a positive electrode, a negative electrode, a separation membrane, and a gel polymer electrolyte. In the secondary battery, the gel polymer electrolyte provides a lithium secondary battery formed by polymerizing the composition for gel polymer electrolyte. In the composition for gel polymer electrolyte according to the present invention, the first compound includes an amine compound containing polyethylene glycol as a functional group, and the second compound includes a mixed compound of the first compound and the second compound which is an epoxy compound. Therefore, when applied to lithium secondary batteries, it can not only improve the battery life by easily inducing the hopping phenomenon, but also exhibit excellent high temperature storage and improve the capacity characteristics of the battery Can do. |