Patent ID: 11935999
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A lithium secondary battery comprising:
a positive electrode;
a negative electrode;
a separator provided between the positive electrode and the negative electrode;
a gel polymer electrolyte included between the negative electrode and the separator, said gel polymer electrolyte comprising an electrolyte liquid and a polymer matrix, wherein the electrolyte liquid is impregnated into the polymer matrix in an amount of 10% by weight to 20% by weight with respect to a total weight of the gel polymer electrolyte in the gel polymer electrolyte; and
a liquid electrolyte included between the positive electrode and the separator,
wherein the electrolyte liquid included in the gel polymer electrolyte comprises an ether-based solvent and a lithium salt, and
the liquid electrolyte included between the positive electrode and the separator comprises a carbonate-based solvent and a lithium salt,
wherein the polymer matrix consists of a monomer having two functional groups,
wherein the monomer having two functional groups is one or more selected from the group consisting of trimethylolpropane ethoxylate triacrylate, divinyl ether, trimethylolpropane, and trimethylolpropane trimethacrylate.