Lg Energy Solution, Ltd.

Chul Eun Yeom

Chul Haeng Lee

Jung Min Lee

Jung Gu Han

Kyung Mi Lee

Young Min Lim

Hyun Yeong Lee

Su Hyeon Ji

Yoon Gyo Cho

A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery comprising the same are provided. The non-aqueous electrolyte solution for a lithium secondary battery of the present disclosure includes a lithium salt, an organic solvent and a compound represented by Formula 1 as a first additive, thereby improving the high-temperature storage characteristics of the secondary battery:

Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery including the same

A non-aqueous electrolyte and a lithium secondary battery including the same are disclosed herein. The non-aqueous electrolyte may be used in a high-voltage battery to achieve excellent life characteristics. In some embodiments, a non-aqueous electrolyte includes an organic solvent, a lithium salt, a compound represented by Formula 1, and a compound represented by Formula 2, wherein, when an amount of the compound represented by Formula 1 is X wt % and an amount of the compound represented by Formula 2 is Y wt % based on a total weight of the non-aqueous electrolyte, X and Y satisfy X+Y≤5 and X≤Y,CN—R—CN  [Formula 1]

Non-aqueous electrolyte for lithium secondary battery and lithium secondary battery including the same

A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte solution includes a lithium salt, an organic solvent, and a compound represented by Formula 1 as an additive. A lithium secondary battery including the non-aqueous electrolyte solution has improved high-rate charge and discharge characteristics at high temperature.

A non-aqueous electrolyte solution for a lithium secondary battery according to the present technology includes: a lithium salt; an organic solvent; and a first additive, and the first additive includes a compound represented by following Chemical formula 1:

Non-aqueous electrolyte solution for lithium secondary battery

The present disclosure provides a non-aqueous electrolyte including an additive for a non-aqueous electrolyte, which is represented by the following Chemical Formula 1: In Chemical Formula 1, Rto Rare each independently any one selected from the group consisting of H, an alkyl group having 1 to 10 carbon atoms, and an alkoxy group having 1 to 10 carbon atoms, and R may be an aliphatic unsaturated hydrocarbon group having 2 to 10 carbon atoms, or —OR' (R′ is an aliphatic unsaturated hydrocarbon group having 2 to 10 carbon atoms).

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Daejeon, South Korea

Chul Eun Yeom