Abstract: 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: Herein, R1 is a substituted or unsubstituted unsaturated hydrocarbon group having 2 to 20 carbon atoms, and R2 is one selected from the group consisting of a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms and a substituted or unsubstituted cyclic alkyl group having 3 to 8 carbon atoms.

Abstract: The present invention relates to a compound capable of lowering the flammability of a non-aqueous electrolyte when included in the non-aqueous electrolyte and improving the life properties of a battery by forming an electrode-electrolyte interface which is stable at high temperatures and low in resistance, and relates to a compound represented by Formula I descried herein, a non-aqueous electrolyte solution and a lithium secondary battery both including the compound, n, m, Ak, and X are described herein.

Abstract: 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: Herein, R1 is a substituted or unsubstituted unsaturated hydrocarbon group having 2 to 20 carbon atoms, and R2 is one selected from the group consisting of a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms and a substituted or unsubstituted cyclic alkyl group having 3 to 8 carbon atoms.

Abstract: The present invention relates to a non-aqueous electrolyte solution for a lithium secondary battery, which includes an additive including a compound represented by Formula 1, a lithium salt, and an organic solvent, and a lithium secondary battery including the same, wherein R1, R2, and m are described herein.

Abstract: The present invention relates to a compound having a cyclic sulfur oxide structure, and a non-aqueous electrolyte solution additive, a non-aqueous electrolyte solution, and a lithium secondary battery which include the same, wherein the lithium secondary battery of the present invention may achieve improved effects in terms of high-temperature stability and gas generation while being able to achieve stable performance for a long time.

Abstract: 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, R1 to R5 are 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).

Abstract: The present invention relates to a non-aqueous electrolyte solution additive capable of improving lifespan characteristics of a lithium secondary battery by forming a solid-electrolyte interphase that is stable even at a high temperature and has low resistance when applied to a non-aqueous electrolyte solution, and relates to a non-aqueous electrolyte solution additive including a sultone-based compound represented by Formula I, a non-aqueous electrolyte solution including the same, and a lithium secondary battery.

Abstract: The present disclosure relates to a non-aqueous electrolyte including an organic solvent, a lithium salt, and a coumarin-based compound represented by the following Chemical Formula 1 and a lithium secondary battery including the non-aqueous electrolyte: in Chemical Formula 1, R is a substituent including one or more elements selected from the group consisting of C, O, N, B, S, P, Si, and F, and n is an integer of 1 to 6.

Abstract: 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, R1 is an unsaturated hydrocarbon group n is an integer of 1 or 2, and R2 is hydrogen, an unsubstituted or substituted alkyl group, or an unsubstituted or substituted alkoxy group.

Abstract: The present disclosure relates to a lithium secondary battery comprising a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and a non-aqueous electrolyte. The non-aqueous electrolyte includes an organic solvent, a lithium salt, a coumarin-based compound represented by [Chemical Formula 1], and a halogen-substituted cyclic carbonate, and the positive electrode active material includes a lithium manganese-rich oxide represented by [Chemical Formula 2].

Abstract: The present disclosure relates to a non-aqueous electrolyte for a lithium secondary battery, including a lithium salt, an organic solvent and a compound represented by Chemical Formula 1; and a lithium secondary battery including the same, wherein R1, R2, L and m are described herein.

Abstract: 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, R1 to R5 are 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).

Abstract: 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 at a concentration of 1.5 M to 2.0 M, an organic solvent containing ethylene carbonate and ethyl propionate, and a first additive represented by Formula 1, wherein the ethylene carbonate and the ethyl propionate are present in a volume ratio of 1:9 to 1.5:8.5: NC—R—CH?CH—R1—CN ??[Formula 1] In Formula 1, R and R1 are each independently a substituted or unsubstituted alkylene group having 1 to 5 carbon atoms.

Abstract: 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 comprises a lithium salt, an organic solvent containing a carbonate compound and a propionate compound, and an additive containing 1,4-dicyano-2-butene and 1,3,5-cyclohexanetricarbonitrile, wherein a volume ratio of the carbonate compound to the propionate compound is 10:90 to 40:60, and wherein a weight ratio of the 1,4-dicyano-2-butene to the 1,3,5-cyclohexanetricarbonitrile is 1:1.5 to 1:3.7.

Abstract: 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.

Abstract: 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 for a lithium secondary battery includes a lithium salt, an organic solvent, and an additive, wherein the additive includes 1,4-dicyano-2-butene (DCB) and a compound represented by Formula 1.