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

Claim 4:
5. The lithium secondary battery of claim 1, wherein (1) the gel polymer electrolyte included between the negative electrode and the separator or (2) the liquid electrolyte included between the positive electrode and the separator further comprises an additive, and the additive comprises a sulfonylmethyl isocyanide-based compound represented by the following Chemical Formula 1:, in the formula,
R1 is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms; an alkoxy group having 1 to 20 carbon atoms; an alkenyl group having 2 to 20 carbon atoms; an alkenyloxy group having 2 to 20 carbon atoms; a cycloalkyl group having 4 to 20 carbon atoms; a cycloalkenyl group having 4 to 20 carbon atoms; an alkynyl group having 2 to 20 carbon atoms; an aryl group having 6 to 20 carbon atoms; and
R2 is a substituted or unsubstituted aliphatic, alicyclic or aromatic hydrocarbon group.