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US 2019/0198925 A1Published application
Non-aqueous Electrolyte Solution And Lithium Secondary Battery Including The Same
AssigneeLG Chem, Ltd.
InventorsJung Hoon Lee, Kyoung Ho Ahn, Chul Haeng Lee, Jeong Woo Oh
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Abstract
The present invention relates to a non-aqueous electrolyte solution including a non-aqueous organic solvent, a lithium salt, and an oligomer represented by Formula 1 described in the present specification, and a lithium secondary battery including the same. Since the non-aqueous electrolyte solution according to an embodiment of the present invention may reduce gas, such as CO or CO2, generated in the secondary battery during high-temperature storage, it may further improve high-temperature stability of the lithium secondary battery.
Claims14
A non-aqueous electrolyte solution comprising:
- a lithium salt;
- a non-aqueous organic solvent;
- and
- an oligomer represented by Formula 1 as an additive:
- wherein, in Formula 1,
- R1 to R3 are each independently a fluorine-substituted or unsubstituted alkylene group having 1 to 4 carbon atoms,
- R4 and R5 are each independently an aliphatic hydrocarbon group or an aromatic hydrocarbon group,
- R6 and R7 are each independently an alkyl group having 1 to 10 carbon atoms or,
- R8 and R9 are each independently an alkyl group having 1 to 10 carbon atoms or,
- R10 is an aliphatic hydrocarbon group or an aromatic hydrocarbon group,
- R11 is an alkylene group having 1 to 3 carbon atoms,
- R12 is hydrogen or an alkyl group having 1 to 2 carbon atoms,
- n is an integer of 1 to 70, and
- m is an integer of 1 to 3.
11 more elements
Dependencies are inferred from the claim text.