| CPC H01M 10/0567 (2013.01) [C07C 309/67 (2013.01); C07F 9/062 (2013.01); H01M 10/0525 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 2300/0025 (2013.01)] | 14 Claims |
|
1. An electrolyte for a lithium secondary battery, comprising:
an organic solvent;
a lithium salt;
a first additive represented by Chemical Formula 1; and
a second additive represented by Chemical Formula 2,
wherein a weight ratio of the first additive and the second additive is from 1:0.25 to 1:3:
 wherein, in Chemical Formula 1, R1 is a saturated hydrocarbon backbone structure having 3 to 10 carbon atoms, and n is an integer of 1 to 3,
 wherein, in Chemical Formula 2, R11 to R13 are each independently hydrogen, or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, and A is a substituent represented by Chemical Formula 3 or Chemical Formula 4,
 wherein, in Chemical Formulae 3 and 4, R14 and R15 are each independently a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 12 carbon atoms, or —OR16, and
R16 is a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 12 carbon atoms, or an alkynyl group having 2 to 6 carbon atoms.
|