| CPC H01M 10/0567 (2013.01) [C07F 7/10 (2013.01); H01M 4/525 (2013.01); H01M 10/052 (2013.01); H01M 10/4235 (2013.01); H01M 2004/028 (2013.01); H01M 2220/30 (2013.01); H01M 2300/0025 (2013.01); Y02E 60/10 (2013.01)] | 9 Claims |
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1. An electrolyte for a lithium secondary battery, the electrolyte comprising:
a lithium salt;
a non-aqueous solvent; and
an additive comprising a compound represented by Formula 1:
 wherein in Formula 1,
R1 to R6 are each independently selected from:
a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, an iso-butyl group, a sec-butyl group, and a tert-butyl group; and
a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, an iso-butyl group, a sec-butyl group, and a tert-butyl group, each being substituted with at least one selected from deuterium and a halogen,
R7 is selected from:
a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, an iso-butyl group, a sec-butyl group, and a tert-butyl group, each being substituted with at least one deuterium,
wherein the additive is included at about 0.5 parts by weight to about 5 parts by weight based on 100 parts by weight of the electrolyte.
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