Hyundai Motor Company

Kia Corporation

Kia Motors Corporation

Ulsan National Institute of Science and Technology

Daejoo Electronic Materials Co., Ltd.

Unist (ulsan National Institute of Science and Technology )

Samsung Electronics Co., Ltd.

Hynix Semiconductor Inc.

Sejong University

The Industry & Academic Cooperation in Chungnam National University (iac)

The Industry & Academic Cooperation in Chungnam National University

Incheon National Uni. Research & Business Fdn

Daejoo Electronic Material Co., Ltd.

Unist, Inc.

Seung Min Oh

Yoon Sung Lee

Sung Ho Ban

Ko Eun Kim

Nam Soon Choi

Sung You Hong

Sang Kyu Kwak

Jun Ki Rhee

Hyeon Gyu Moon

Ik Kyu Kim

Yeol Mae Yeo

Sang Mok Park

Ji Eun Lee

Ki Seok Koh

Dae Yeon Hwang

Ki Seok Lee

Sung Min Choi

Augustin Jinwoo Hong

Seung Wan Song

Ki Jun Kim

Ki Young Kim

Sang Shin Lee

Sang Hun Lee

Sung Soo Kim

Seo Young Jeong

Hyeong Jun Kim

Hong Seok Min

Woo Young Jin

Woo Gyum Kim

Je Min Park

Dong Jun Kim

Seung Taek Myung

Hui Beom Nam

Jin Seong Lee

Nam Hyeong Kim

Min Ho Jeon

Gyeong Jun Chung

Jeong Seop Shim

Hye Jin Seong

Do Yeong Lee

Mi Na Lee

Ji Seung Lee

Young Woo Lee

Sa Heum Kim

Sung Hoon Lim

Hyo Seok Kim

Dong Joong Kim

Jung Je Woo

Min Young Shin

Jong Chan Lim

Kyung Jin Lee

Hee Jae Kim

Young Min Jeon

Min Pyeong Kim

Jeong Gyu Park

Woo Byoung Cha

Su Hyun Lee

Yeong Don Park

Jun Hwa Park

Mei Hua Hong

Daeun Kim

Ji Ung Choi

Jun Young Mun

Jang Han Kim

Hyeon Soo Park

The present disclosure relates to a negative electrode active material for non-aqueous electrolyte secondary battery and a manufacturing method thereof and, more specifically to, a negative electrode active material for non-aqueous electrolyte secondary battery, the negative electrode active material which not only improves conductivity by reacting, silicon, silicon dioxide and magnesium through a gas phase reaction to produce a reaction product and coating carbon on the surface of the reaction product so as to give conductivity to the reaction product, but also exhibits an effect of greatly improving lifetime characteristics and capacity characteristics by showing a structure that is stable in a volume change caused by intercalation or deintercalation of lithium, and a manufacturing method thereof.

Negative electrode active material for non-aqueous electrolyte secondary battery and manufacturing method thereof

The present invention relates to a silicon oxide composite for a lithium secondary battery anode material and a method for manufacturing same and, more specifically, to a silicon oxide composite for a lithium secondary battery anode material and a method for manufacturing same, wherein the silicon oxide composite comprises a Si cluster and MgxSiOy(0≤x≤3, 0≤y≤5) formed on a peripheral portion of the Si cluster.

Silicon oxide composite for lithium secondary battery anode material and method for manufacturing same

An electrolyte for a lithium secondary battery can enhance lifetime and output characteristics in a high-capacity lithium secondary battery. The electrolyte for a lithium secondary battery includes a lithium salt, a solvent, and a functional additive. The functional additive includes 1-(3-((tert-butyldimethylsilyl)oxy)propyl)-5-(4-fluorophenyl)-1H-1,2,3-triazole-4-carbonitrile as a positive electrode film additive.

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

The present disclosure relates to a negative electrode active material for non-aqueous electrolyte secondary battery, and a negative electrode active material for non-aqueous electrolyte secondary battery according to an embodiment of the present disclosure comprises a silicon oxide composite comprising silicon, silicon oxide (SiO, 0<x≤2) and magnesium silicate, and including pores with a size of 50 to 300 nm therein. The negative electrode active material for non-aqueous electrolyte secondary battery comprising the silicon oxide composite according to the present disclosure solves a swelling problem by allowing the pores inside the silicon oxide composite to play a role of buffering expansion in the charging process, efficiently controls volume expansion by allowing stress caused by expansion and contraction generated during charging or discharging to be concentrated in the pores inside the silicon oxide composite, and can improve lifetime characteristics of the lithium secondary battery accordingly.

Negative electrode active material for non-aqueous electrolyte secondary battery comprising silicon oxide composite and manufacturing method thereof

The present disclosure provides an electrolyte for a lithium secondary battery capable of improving the lifespan characteristics and output characteristics of a high capacity lithium secondary battery and a lithium secondary battery including the same. The electrolyte for a lithium secondary battery, according to an embodiment of the present disclosure, is an electrolyte for a lithium secondary battery including a lithium salt, a solvent, and a functional additive agent, in which the functional additive agent includes a cathode film additive agent, (4-allyl-2-methoxyphenoxy) trimethylsilane, represented by the following formula:

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

Proposed is an additive for an electrolyte solution to improve the electrochemical properties of a lithium secondary. Especially, an electrolyte for a lithium secondary battery includes: a lithium salt; a solvent; and a functional additive, wherein the functional additive includes 1,2-bis(maleimido)ethane, represented by the following formula 1: The electrolyte solution for a lithium secondary battery includes: an electrolyte salt and an organic solvent, wherein the electrolyte solution further comprises, as additives, vinylene carbonate (VC) represented by the following Formula 1, and a compound represented by the following Formula 2, (5-(4-nitrophenyl)-1-(3-((trimethylsilyl)oxy)propyl)-1H-1,2,3-triazole-4-carbonitrile):

Solution for lithium secondary battery and lithium secondary battery including same

An additive for an electrolyte solution improves the electrochemical properties of a lithium secondary battery.

Disclosed are an electrolyte solution and an additive thereof, which may improve electrochemical properties of a lithium secondary battery.

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

Disclosed is a positive electrode material for a lithium secondary battery. The positive electrode material includes a positive electrode active material formed of Li—[Mn—Ti]-M-O-based material including a transition metal (M) to enable reversible intercalation and deintercalation of lithium and molybdenum oxide. The positive electrode active material is coated with the molybdenum oxide to form a coating layer on a surface thereof.

Positive electrode material for lithium secondary battery and lithium secondary battery including same

Disclosed are a separator for secondary batteries with enhanced stability and a method of manufacturing the separator. The separator can prevent self-discharge which may occur when a porous non-woven fabric material is used for a separator; can perform a shutdown function at a high temperature of 200° C. or less; and can avoid even under harsh conditions of high temperatures, deterioration in stability caused by internal short-circuit of positive and negative electrodes. In particular, the separator for secondary batteries of the present invention includes a porous non-woven fabric material impregnated with a baroplastic polymer powder and pores of the porous non-woven fabric material are filled with the baroplastic polymer powder by pressing an assembly of the secondary battery.

Separator for secondary batteries with enhanced stability and method of manufacturing the same

The electrolyte for a lithium secondary battery comprises: a lithium salt; a solvent; and a functional additive, wherein the functional additive comprises naphthalen-1-yl sulfurofluoridate, represented by the following formula 1:

Electrolyte for lithium secondary battery and lithium secondary battery comprising same

Disclosed are a cathode material for a lithium secondary battery and a method of manufacturing the same. For instance, the lithium secondary battery may have a high energy density by using only a single cathode material. Particularly, the cathode material for a lithium secondary battery includes a Li&#x2014;[Mn&#x2014;Ti]&#x2014;Al&#x2014;O-based cathode active material; and a carbon nanotube (CNT) attached to the surface of the cathode active material in an acid-treated state to be formed as a composite.

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

A method of mixing a cathode active material in a process of manufacturing a cathode of a lithium secondary battery is provided. The method includes a preparation step of preparing a lithium compound removal solution in which PAA (polyacrylic acid) is mixed with a solvent, a removal step of reacting the lithium compound removal solution with the cathode active material, on a surface of which a lithium compound is present, thus removing the lithium compound present on the surface of the cathode active material, and a mixing step of mixing the cathode active material, which is mixed with the lithium compound removal solution, with a conductive material and a binder.

Method of mixing cathode active material

The electrolyte for a lithium secondary battery includes: a lithium salt; a solvent; and a functional additive, wherein the functional additive includes: at least one high-voltage additive selected from a group consisting of lithium bis(phthalato)borate, represented by the following formula 1; hexafluoroglutaric anhydride, represented by the following formula 2; and phosphoric acid tris(2,2,2-trifluoroethyl)ester, represented by the following formula 3:

Disclosed are an electrolyte solution for lithium secondary batteries and a lithium secondary battery including the same. The electrolyte solution for lithium secondary batteries includes: a lithium salt; a solvent; and a functional additive, wherein the functional additive includes a first positive-electrode film additive, which is 2-(2'((tert-butoxycarbonyl)amino)ethoxy)-ethyl p-methylbenzenesulfonate, represented by the following Formula 1:

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

Growing community of inventors

Incheon, South Korea

Seung Min Oh