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US 2015/0086878 A1Published application
Non-aqueous electrolyte and lithium secondary battery using the same
AssigneeLG Chem, Ltd.
InventorsSung-Hoon YU, Doo-Kyung YANG, Jong-Ho JEON, Min-Jung JOU
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Abstract
The present invention provides non-aqueous electrolyte solution for a lithium secondary battery, comprising an ester-based compound having a branched-chain alkyl group and an ester-based compound having a straight-chain alkyl group; and a lithium secondary battery using the same.
Claims21
A non-aqueous electrolyte solution for a lithium secondary battery, comprising an electrolyte salt and an organic solvent,
- wherein the non-aqueous electrolyte solution further comprises a first ester-based compound having the following formula (I) and a second ester-based compound having the following formula (II), and the amount of the first and the second ester-based compounds is in the range of 50 to 90 vol % based on the total volume of the organic solvent, the first ester-based compound and the second ester-based compound:
- wherein,
- R1 is substituted or unsubstituted straight- or branched-chain alkyl group having 1 to 10 carbon atoms,
- R2 is substituted or unsubstituted branched-chain alkyl group having 3 to 10 carbon atoms, and
- R3 and R4 are substituted or unsubstituted straight-chain alkyl group having 1 to 10 carbon atoms.
2 more elements
Dependencies are inferred from the claim text.