Sk Innovation Co., Ltd.

Sk on Co., Ltd.

Sk Global Chemical Co., Ltd.

Sk Geo Centric Co., Ltd.

Jin Haek Yang

In Haeng Cho

Sung Yon Oh

Dong Gun Lee

Myoung Lae Kim

Ho Seong Lee

Joo Hyun Lee

Hyo Shin Kwak

Dai In Park

Sun Joo Kim

Su Hee Han

Yong Nam Joe

Provided are an electrolyte for a secondary battery including a lithium salt, a nonaqueous organic solvent, and a cyclic fluorophosphonate compound, and a lithium secondary battery including the same.

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

Provided is a lithium secondary battery comprising: a cathode comprising a cathode active material, an anode comprising an anode active material, a separator interposed between the cathode and the anode, and an electrolyte for a secondary battery, wherein the cathode active material is Li(NiCoMn)O, wherein 0.90≤x≤1.10, 0.5≤a≤0.99, 0.005≤b<0.5, 0.005≤c<0.5, and a+b+c=1, and the electrolyte for a secondary battery comprises a lithium salt, a nonaqueous organic solvent, and a cyclic phosphate compound represented by the following Chemical Formula 2: wherein Rto Rand R' and R″ are independently of one another hydrogen or C-Calkyl; Lis —CRR—; and Rand Rare independently of each other C-Calkyl .

Provided are an electrolyte for a secondary battery including a lithium salt, a nonaqueous organic solvent, and a bisfluorophosphite multicyclic compound, and a lithium secondary battery including the electrolyte.

Electrolyte for secondary battery and lithium secondary battery including the same

Provided is an electrolyte for a secondary battery including a lithium salt, a nonaqueous organic solvent, and a cyclic phosphate compound represented by the following Chemical Formula 2: wherein Rto Rand R' and R&#x2033; are independently of one another hydrogen or C1-C7 alkyl; Lis &#x2014;(CRR)&#x2014;; Rand Rare independently of each other hydrogen or C1-C7 alkyl; and n is an integer of 1 to 3. Also provided is a lithium secondary battery including the electrolyte.

A lubricant composition includes a base oil, a phenothiazine-based polymerization inhibitor, and a polymerization inhibitory accelerator including a hindered phenol-based compound and a hydroquinone-based compound. A self-polymerization in a polymerizing process is suppressed by an interaction between the polymerization inhibitor and the polymerization inhibitory accelerator. A method of preparing a copolymer using the lubricant composition is also provided.

Lubricant composition and method of preparing copolymer using the same

The present invention relates to a heteroatom ligand, an oligomerization catalyst containing the same, and a method for preparing an oligomer by using the same. Specifically, the present invention relates to a heteroatom ligand having a silsesquioxane derivative, an oligomerization catalyst containing the same, and a method for preparing an oligomer by using the same.

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Daejeon, South Korea

Jin Haek Yang