Lg Energy Solution, Ltd.

Lg Chem, Ltd

Yu Ha An

Chul Haeng Lee

Jeong Woo Oh

Hyun Seung Kim

Young Min Lim

Doo Kyung Yang

Jung Min Lee

Yi Jin Jung

Sung Guk Park

Kyoung Ho Ahn

Min Jung Kim

Gwang Yeon Kim

Shul Kee Kim

Chui Haeng Lee

Jin Hyun Park

Yeon Ji Oh

The present disclosure provides a non-aqueous electrolyte solution for a lithium secondary battery, and a lithium secondary battery including the non-aqueous electrolyte solution. Specifically, the non-aqueous electrolyte solution for a lithium secondary battery may include a lithium salt, a non-aqueous organic solvent, a first additive comprising a compound represented by Formula 1, at least one second additive selected from the group consisting of vinylethylene carbonate (VEC) and ethyl di(pro-2-yn-1-yl) phosphate (EDP), and at least one third additive selected from the group consisting of a cyclic carbonate compound and a compound represented by Formula 2.

Non-aqueous electrolyte solution 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 a first additive. A lithium secondary battery including the non-aqueous electrolyte has improved high-temperature storage characteristics.

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

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,

Non-aqueous electrolyte, and lithium secondary battery comprising the same

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 iron phosphate-based composite oxide; a negative electrode including an negative electrode active material; and a separator interposed between the positive electrode and the negative electrode.

Lithium secondary battery

An electrolyte for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, an electrolyte for a lithium secondary battery includes a lithium salt, an organic solvent, and a compound represented by Formula 1. In some embodiments, a lithium secondary battery includes a positive electrode, a negative electrode, and the electrolyte.

Electrolyte for lithium secondary battery and lithium secondary battery including the same

The present invention relates to an electrolyte for a lithium secondary battery and a lithium secondary battery including the same. In some embodiments, the electrolyte includes a lithium salt, a first additive, a second additive, and an organic solvent, wherein the first additive includes a compound represented by Formula 1 and the second additive includes a compound represented by Formula 2.

An electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, an electrolyte solution includes a lithium salt, an additive including a compound represented by Formula 1, and an organic solvent. In some embodiments, the lithium secondary battery includes a positive electrode, a negative electrode which includes a negative electrode active material containing SiO(0<x≤2), a separator, and the electrolyte solution.

Electrolyte solution for lithium secondary battery and lithium secondary battery including the same

A non-aqueous electrolyte solution 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, a compound represented by Formula 1 as a first additive, and lithium difluorophosphate as a second additive, wherein a weight ratio of the first additive to the second additive is in a range of 1:2 to 1:10.

A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, non-aqueous electrolyte solution includes a lithium salt, an organic solvent, and a compound represented by Formula 1 as a first additive. A lithium secondary battery including the non-aqueous electrolyte has improved flame retardancy.

A non-aqueous electrolyte solution additive, a non-aqueous electrolyte solution for a lithium secondary battery including the same, and a lithium secondary battery including the non-aqueous electrolyte solution are disclosed herein. In some embodiments, the non-aqueous electrolyte solution additive includes a Lewis base compound capable of rapidly reacting with an acid. In some embodiments, the lithium secondary battery including the non-aqueous electrolyte solution has improved high-temperature storage durability.

Non-aqueous electrolyte solution additive, and non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery which include the same

An electrolyte for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, an electrolyte includes a lithium salt, an organic solvent, and an additive, wherein the additive includes a compound represented by Formula 1 and a compound represented by Formula 2.

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 compound represented by Formula 1 having an excellent effect of scavenging a decomposition product generated from a lithium salt in the electrolyte solution, as a first additive, and lithium difluorophosphate as a second additive. The lithium secondary battery include the non-aqueous electrolyte solution has improved high-temperature durability.

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 a compound represented by Formula 1.

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.

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, a first additive, and a second additive, wherein the first additive is lithium 4,5-dicyano-2-(trifluoromethyl)imidazolide, and the second additive is tetravinylsilane.

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Daejeon, South Korea

Yu Ha An