Sk Innovation Co., Ltd.

Sk on Co., Ltd.

Sk-materials Co., Ltd.

Sk Global Chemical Co., Ltd.

Sk Corporation

Sk Lubricants Co., Ltd.

Yu Na Shim

Cheol Woo Kim

Jin Kyung Jo

Young Bom Kim

Chanwoo Kim

Myoung Lae Kim

Jaechan Ryu

Sang Hye Shin

Kwang Kuk Lee

Sang Min Park

Joo Hyun Lee

Cholho Lee

Jae Hoon Kwak

Min Kyung Seon

Jik Soo Kim

Sang Bok Kim

Jin Su Ham

In Haeng Cho

Dai In Park

Han Sol Lee

Jong Ho Lee

Jeong Bae Yoon

Sung Yon Oh

Tae Kyoung Lee

Min Ho Jung

Soo Young Hwang

Kyun Phyo Lee

Jin Sung Kim

Jong Ho Lim

Seong Il Lee

Je Ho Lee

Chol Ho Lee

You Jin Shim

Ki Sung Park

Ha Na Song

Sun Ae Hwang

Hyun Ji Jeon

Chan Woo Kim

Jae Chan Ryu

The present disclosure relates to an electrolytic solution for a secondary battery and a lithium secondary battery employing the same. The electrolytic solution for a secondary battery of the present disclosure contains a sulfonyl compound, such that a lithium secondary battery employing a high content of nickel for a cathode has significantly improved quick charge characteristics, room temperature lifespan characteristics, and low-temperature characteristics.

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

Provided are a novel boron-containing compound and an electrolyte solution additive for a secondary battery including the same. The electrolyte solution for a secondary battery provided in one embodiment includes the novel boron-containing compound, thereby suppressing the decomposition of an electrolyte solution to improve the capacity and the life characteristics of a battery.

Boron-containing compound and electrolyte solution additive for 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 present disclosure relates to a novel boron-containing compound and an electrolyte additive for a secondary battery containing the same. An electrolyte for a secondary battery provided in one embodiment contains the novel boron-containing compound, such that decomposition of the electrolyte may be suppressed, thereby improving a capacity and a lifespan of the battery.

Boron-containing compound and electrolyte additive for secondary battery containing the same

An etching composition contains phosphoric acid, phosphoric anhydride, a compound represented by the following Formula 1, and a silane compound comprising at least one silicon (Si) atom, excluding the compound represented by Formula 1: wherein, in Formula 1, A is an n-valent radical, where n is an integer of 1 to 6, L is a direct bond or hydrocarbylene, Y is selected from NR, O, PRand S, where Rto Rare independently hydrogen, halogen, a substituted or unsubstituted hydrocarbyl group, or non-hydrocarbyl group, X and Z are independently selected from N, O, P and S, and Rto Rare independently an unshared electron pair, hydrogen, or a substituted or unsubstituted hydrocarbyl group.

Composition for etching, method for etching insulator and method for manufacturing semiconductor device, and novel compounds

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.

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

An electrolyte solution for a lithium secondary battery according to an embodiment of the present invention includes an organic solvent, a lithium salt, a compound represented by Chemical Formula 1, and a compound represented by Chemical Formula 2. A lithium secondary battery including the electrolyte solution and having improved low temperature and high temperature properties is provided.

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

An etchant composition includes a silane compound represented by the following Chemical Formula 1: 

Silane compound

The present disclosure relates to a silicon compound represented by Formula 1 below: 

Silicon compound

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

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Daejeon, South Korea

Yu Na Shim