Abstract: The present invention relates to a thermosetting electrolyte composition for a lithium secondary battery and a lithium secondary battery including the same, and particularly, to a thermosetting electrolyte composition for a lithium secondary battery, which includes LiPF6 as a first lithium salt, a non-aqueous organic solvent, and a polymer or oligomer containing a unit represented by Formula 1, wherein the polymer or oligomer containing the unit represented by Formula 1 is included in an amount of 0.6 wt % to 15 wt % based on a total weight of the thermosetting electrolyte composition for a lithium secondary battery, and a lithium secondary battery including the same.

Abstract: A lithium secondary battery is disclosed herein. In some embodiments, a lithium battery includes a positive electrode having a lithium-nickel-cobalt-manganese-based electrode active material wherein nickel has a content of 80 mol % or greater, relative to the other transition metals, a negative electrode including a silicon-based negative electrode active material, a separator, and a non-aqueous electrolyte solution including a non-aqueous organic solvent and a lithium salt, the lithium salt being contained in a concentration of 1.8 M to 5 M, and wherein the lithium salt includes LiPF6 and a lithium bis(fluorosulfonyl)imide.

Abstract: A non-aqueous electrolyte solution and a lithium secondary battery including the same are disclosed herein. In some embodiments, the non-aqueous electrolyte solution includes an ionic solution containing at least one anion selected from the group consisting of a bis(fluorosulfonyl)imide anion and a bis(trifluoromethane)sulfonylimide anion, a cation, a non-aqueous solvent, a lithium salt, a phosphite-based additive, and a surfactant including an oligomer represented by Formula 1.

Abstract: The present invention relates to a lithium secondary battery including a positive electrode, a negative electrode, a separator, which includes a coating layer including an organic binder and inorganic particles, and a gel polymer electrolyte formed by polymerization of an oligomer, wherein the organic binder and the gel polymer electrolyte are bonded by an epoxy ring-opening reaction, and a method of preparing the same.

Abstract: A lithium secondary battery is disclosed herein. The secondary battery has improved high temperature safety and may prevent generation of a large amount of gas under a high temperature condition, which prevents an increase in resistance and a decrease in capacity due to the elution of metal ions from an electrode by uniformly forming a coating film on an electrode surface during activation of the battery. A positive electrode active material of the battery includes a high concentration(s) of nickel and/or manganese and a non-aqueous electrolyte including an additive are used, which improves performance and high-temperature safety of the battery.

Abstract: The present invention provides an electrolyte for a lithium secondary battery and a lithium secondary battery including the same, the electrolyte including a polymer, and one or more selected from the group consisting of an inorganic solid electrolyte particle and a ferrodielectric, wherein the polymer includes one or more selected from the group consisting of a polymer represented by Formula 1 and a polymer including a repeating unit represented by Formula 2.

Abstract: The present invention provides a non-aqueous electrolyte solution for a lithium secondary battery comprising a lithium salt, an organic solvent, and a pyridine-based additive containing two nitrile groups.

Abstract: The present technology relates to a non-aqueous electrolyte solution for a lithium secondary battery, and a lithium secondary battery including the same, and more particularly, to a non-aqueous electrolyte solution for a lithium secondary battery, including: a lithium salt; an organic solvent; a first additive; and second additive, in which the first additive is a compound represented by chemical formula 1, and the second additive is a compound represented by chemical formula 2, and a lithium secondary battery including the same: R1 to R3 and L are described herein.

Abstract: The present disclosure relates to a lithium secondary battery including: a non-aqueous electrolyte including a lithium salt, an organic solvent, a first additive represented by Chemical Formula 1 and a second additive represented by Chemical Formula 2; a positive electrode including a positive electrode active material including a lithium composite transition metal oxide having a nickel content of 70 mol % or more among a total transition metal content; a negative electrode including an negative electrode active material; and a separator interposed between the positive electrode and the negative electrode.

Abstract: A secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an electrolyte solution, wherein the positive electrode includes a current collector and a positive electrode active material layer disposed on the current collector, the positive electrode active material layer includes a positive electrode active material and carbon nanotubes, and the electrolyte solution includes a non-aqueous solvent, a lithium salt, and tetravinylsilane.

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 relates to a non-aqueous electrolyte solution for a lithium secondary battery, and the non-aqueous electrolyte solution includes: a lithium salt; an organic solvent; and an additive including vinylene carbonate, vinyl ethylene carbonate, and a compound represented by chemical formula 1: Herein, each of R1 to R3 is independently hydrogen or an alkyl group having 1 to 3 carbon atoms.

Abstract: A non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte for a lithium secondary battery includes a lithium salt, an organic solvent, and an additive comprising a compound represented by the following Chemical Formula 1: wherein Q is a single bond, or a substituted or non-substituted C1-C10 alkyl group, and each of A1, A2 and A3 independently represents hydrogen (H) or a substituted or non-substituted C1-C10 alkyl group. The non-aqueous electrolyte can scavenge decomposition products of lithium salt to maintain passivation of an SEI film during high-temperature storage. The non-aqueous electrolyte improves battery performance by improving self-discharge phenomenon caused by elution from a positive electrode and breakage of the SEI film at a negative electrode.

Abstract: The present invention provides a non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same. Specifically, since the non-aqueous electrolyte solution forms a robust solid electrolyte interphase (SEI) by including a lithium salt, an organic solvent, and a compound represented by Formula 1, the non-aqueous electrolyte solution for a lithium secondary battery may improve battery performance, wherein, in Formula 1, R and R1 are described herein.

Abstract: The present disclosure provides a non-aqueous electrolyte including an additive for a non-aqueous electrolyte represented by Formula 1 below: wherein, R1 to R5 may each independently be any one selected from the group consisting of H, an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, a cycloalkenyl group having 3 to 12 carbon atoms, and a nitrile group.

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, the non-aqueous electrolyte solution for a lithium secondary battery includes a lithium salt, an organic solvent, and a compound represented by the following Formula 1, and has an excellent effect of scavenging decomposition products generated from the lithium salt, and thus, may improve overall performance of the battery: wherein in Formula 1, A is a C1 to C5 alkyl group.

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 comprising a lithium salt; an organic solvent; and a compound represented by Chemical Formula 1, wherein the invention can control moisture in the lithium secondary battery in which the non-aqueous electrolyte is used, suppress by-product formation according to moisture control, and improve the durability of the solid electrolyte layer, thereby improving the durability thereof, wherein L1 and L2 are each independently a single bond or an alkylene group having 1 to 5 carbon atoms, and R1 is hydrogen or an alkyl group having 1 to 5 carbon atoms.

Abstract: A non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, the non-aqueous electrolyte includes a lithium salt, an organic solvent, a compound represented by Formula 1 as a first additive, lithium difluorophosphate as a second additive, and a compound represented by Formula 2 as a third additive.

Abstract: A lithium secondary battery is disclosed herein. In some embodiments, a lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, where the negative electrode active material consists of a silicon-based material, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte solution, wherein the non-aqueous electrolyte solution includes a lithium salt including LiPF6 and LiN(FSO2)2, an additive including a sultone-based compound, and an organic solvent including a non-fluorine-based linear carbonate solvent and a fluorine-based cyclic carbonate solvent.