Sk on Co., Ltd.

Sk Innovation Co., Ltd.

Sk Lubricants Co., Ltd.

Sang Hye Shin

Sang Min Park

Ji Sun Lee

Jik Soo Kim

Sang Bok Kim

Jeong Bae Yoon

Tae Kyoung Lee

Yu Na Shim

Myoung Lae Kim

Ji Hoon Choi

Sung Real Son

Tae Seung Kim

In Hyoup Song

Sung Yon Oh

Jung Moon Sung

Suk Joon Hong

Yoon Jae Yim

Ha Na Song

Jae Young Choi

Sun Ae Hwang

The cathode active material for a lithium secondary battery according to embodiments of the present invention includes a lithium-transition metal composite oxide particle including a plurality of primary particles, and the lithium-transition metal composite oxide particle includes a lithium-sulfur-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by preventing the layer structure deformation of the primary particles and removing residual lithium.

Cathode active material for lithium secondary battery and lithium secondary battery including the same

An electrolyte solution for a secondary battery according to an exemplary embodiment includes a lithium salt, a non-aqueous organic solvent, and a silatrane-based compound represented by Chemical Formula 1. By including the electrolyte solution for a secondary battery according to an exemplary embodiment, a secondary battery can exhibit improved storage characteristics and improved capacity characteristics.

Electrolyte solution for secondary battery and secondary battery including the same

The cathode active material for a lithium secondary battery according to embodiments of the present invention includes lithium-transition metal composite oxide particles including a plurality of primary particles, and the lithium-transition metal composite oxide particles have a lithium-potassium-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by preventing the layer structure deformation of the primary particles and removing residual lithium.

Disclosed are an ionic liquid, having wear resistance maintained at low temperatures and containing a divalent cation including at least one of bis(ammonium) and bis(phosphonium) and a monovalent anion including at least one of sulfonate and phosphate, and a lubricant composition including the ionic liquid.

Ionic liquid containing divalent cation and monovalent anion and lubricant composition comprising same

The present invention relates to a method for producing anhydrosugar alcohol using an organic additive having one hydroxyl group. The present invention makes it possible to prevent oligomers and polymers from being produced by polymerization of isosorbide during dehydration of sorbitol molecules, and thus solves problems, including a reduction in fluidity in a dehydration reactor, interference with the flow of fluids in the reactor and pipelines, and interference with stirrer operation, which occur due to the oligomers and polymers.

Method of preparing anhydrosugar alcohol using additive for prohibiting polymerization by dehydration

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Daejeon, South Korea

Sang Hye Shin