Sk on Co., Ltd.

Sk Innovation Co., Ltd.

Sk Global Chemical Co., Ltd.

Myoung Lae Kim

Hyo Shin Kwak

Jik Soo Kim

Sang Bok Kim

Han Sol Lee

Yu Na Shim

Cholho Lee

Chanwoo Kim

Jaechan Ryu

In Haeng Cho

Dai In Park

Won Yeob Kim

Hyuk Joo Kim

Sang Min Park

Ji Hoon Choi

Duck Chul Hwang

Jeong Bae Yoon

Mi Jung Noh

Jin Seok Seo

Sang Hye Shin

Tae Kyoung Lee

Se Rah Moon

Sung Jin Kim

Joo Hyun Lee

Sung Yon Oh

Jin Haek Yang

Sung Ho Son

Ki Yup Kim

Ki Sung Park

Yong Gyun Cho

Won Seok Jang

Jun Tae Choi

Ho Seong Lee

Jin Hong Lee

Chol Ho Lee

Seung Eon Lee

Su Hee Han

Hong Won Lee

Yeong Min Jo

Jee Young Ahn

Seong Jin Park

Seung Hwan Lee

Hyeon Jin Go

Myung Soo Park

Yong Nam Joe

Min Joung Im

Chan Woo Kim

Jae Chan Ryu

A cathode active material for a lithium secondary battery includes a lithium metal oxide particle, and an organic poly-phosphate or an organic poly-phosphonate formed on at least portion of a surface of the lithium metal oxide particle. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the organic poly-phosphate or the organic poly-phosphonate.

Cathode active material for lithium secondary battery and method of manufacturing the same

An electrolyte for a lithium secondary battery according to embodiments of the present invention includes an organic solvent, a lithium salt, and an additive including a succinic anhydride-based compound substituted with a trialkoxysilyl alkyl group. A lithium secondary battery including the electrolyte provides enhanced cycle property and high temperature stability.

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

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

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

A polymer electrolyte for a lithium secondary battery that may include: a fluorine-based solvent; a lithium salt; and a flame retardant polymer containing phosphorus and fluorine, wherein the polymer electrolyte has a fluorine content of 35 to 60% by weight and a phosphorus content of 2.3 to 7.5% by weight. Lithium secondary batteries containing the polymer electrolyte exhibit improved flame retardancy and ionic conductivity as well as enhanced high-voltage stability.

Polymer electrolyte for lithium secondary battery and lithium 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 electrolyte solution for a lithium secondary battery includes an organic solvent, a lithium salt, and a pentaerythritol diphosphite-based compound including at least one substituent selected from the group consisting of a silyl group, a sulfonyl group, a phosphoryl group and a phosphino group. A lithium secondary including the electrolyte solution is provided.

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

An electrolyte solution for a lithium secondary battery and a lithium secondary battery including the electrolyte solution are provided. The electrolyte solution includes an additive represented by Chemical Formula 1, an organic solvent and a lithium salt: wherein in Chemical Formula 1, Rand Rare each independently hydrogen or a substituted or unsubstituted C-Calkyl group, X is O or S, and L is a substituted or unsubstituted C-Calkylene group. The lithium secondary battery including the electrolyte solution provides enhanced high-temperature properties.

A cathode active material for a lithium secondary battery includes a lithium metal oxide particle and a thio-based compound formed on at least portion of a surface of the lithium metal oxide particle. The thio-based compound has a double bond that contains a sulfur atom. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the thio-based compound.

Growing community of inventors

Daejeon, South Korea

Myoung Lae Kim