Lg Energy Solution, Ltd.

Lg Chem, Ltd

Jeong Woo Oh

Chul Haeng Lee

Kyoung Ho Ahn

Hyun Seung Kim

Yu Ha An

Jung Hoon Lee

Sol Ji Park

Hyung Tae Kim

Yi Jin Jung

Sung Guk Park

Won Kyung Shin

Gwang Yeon Kim

Min Soo Kim

Doo Kyung Yang

Byung Chun Park

Chui Haeng Lee

Yoon Gyo Cho

Young Mi Seo

Min Jung Kim

Yoo Sun Kang

Yu Ra Jeong

Young Min Lim

Sung Hoon Yu

Jun Hyeok Han

Ha Eun Kim

An electrolyte solution additive, a non-aqueous electrolyte solution including the same, and a lithium secondary battery including the same are disclosed herein. In some embodiments, an electrolyte solution additive is represented by Formula 1

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

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

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:

A non-aqueous electrolyte solution and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte solution includes an organic solvent containing cyclic carbonate, dimethyl carbonate, and a nitrile-based solvent represented by Formula 1, and a lithium salt:R—CN  [Formula 1]

Non-aqueous electrolyte solution and lithium secondary battery comprising same

An electrolyte solution additive for a secondary battery, a non-aqueous electrolyte solution, and a lithium secondary battery including the same are disclosed herein. In some embodiments, an electrolyte solution additive is represented by Formula 1: In Formula 1, R is an unsubstituted or substituted alkyl group having 1 to 5 carbon atoms.

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

An electrolyte solution additive, an electrolyte solution including the same, and a lithium secondary battery including the same are disclosed herein. In some embodiments, an electrolyte solution additive includes a compound represented by Formula 1: Wherein X is oxygen (O) or sulfur (S), and R is a substituted or unsubstituted alkyl group having 1 to 5 carbon atoms or N(R), wherein Ris hydrogen or a substituted or unsubstituted alkyl group having 1 to 5 carbon atoms. The additive has an excellent effect of scavenging a decomposition product generated from a lithium salt and simultaneously forming a robust film on a surface of a positive electrode.

A non-aqueous electrolyte solution has improved high-temperature stability and high-temperature durability and a lithium secondary battery including the same. The non-aqueous electrolyte solution may include a lithium salt; a non-aqueous organic solvent; and a compound represented by Formula 1 of a specific structure:

Non-aqueous electrolyte solution and lithium secondary battery including 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 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 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 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.

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Daejeon, South Korea

Jeong Woo Oh