Lg Energy Solution, Ltd.

Lg Chem, Ltd

Seoul National University

Postech Academy-industry Foundation

Ulsan National Institute of Science and Technology

Industry-university Cooperation Foundation Hanyang University

Postech Research and Business Development Foundation

Jonghyun Chae

Daeil Kim

Geun Chang Chung

Young Geun Choi

Jong Mo Jung

Lucia Kim

Seung Jae Yoon

Yeonju Lee

Yourim Yoon

Chul Haeng Lee

Young Cheol Choi

Sung Chul Lim

Suhwan Kim

JangBae Kim

Soojin Park

Jehoon Lee

Wansoo Chang

Jihye Yang

Jaegeon Ryu

Jong-Chan Lee

Kyoung Hoon Kim

Moon Jeong Park

Seungha Kim

Youngcheol Choi

Dong Hyeop Han

Jihoon Ahn

Na Kyung Kim

Daun Jeong

Ha Young Jung

Taesoo Bok

Dongki Hong

Seokkeun Yoo

Sung Soo Yoon

Doo Kyung Yang

Kwonnam Sohn

Eunkyung Cho

Kyung Oh Kim

Min Seo Kim

Jeongae Yoon

Hyun Chul Ha

Sujee Kwon

Ji-Hoon Baik

Won Cheol Yoo

Min Seok Kang

SangEun Cho

Gyuha Jo

Jongheon Kwak

A solid polymer electrolyte and a method for preparing the solid polymer electrolyte are disclosed. More particularly, a solid polymer electrolyte including a multifunctional acrylate-based polymer, a C1 to C10 polyalkylene oxide, a flame-retardant polymer, a lithium salt, and a non-aqueous solvent, wherein the multifunctional acrylate-based polymer is cross-linked with the polyalkylene oxide to form semi-interpenetrating polymer networks (semi-IPN), and the flame-retardant polymer is present blended with the semi-interpenetrating polymer networks of the multifunctional acrylate-based polymer and the polyalkylene oxide, which shows high solid content and flame-retardant characteristics, and a method for preparing the same.

Solid electrolyte, method for preparing same, and all-solid-state battery including same

A polymer material for a lithium secondary battery having ionic conductivity and electronic conductivity at the same time, and a method for preparing the same. The polymer material includes a polythiophene-based polymer and a conductive polymer, and the polymer material may be formed by forming a polythiophene-based polymer, forming a conductive polymer, and heat-treating the polythiophene-based polymer and the conductive polymer.

Lithium secondary battery polymer material and manufacturing method therefor

An amorphous silicon-carbon composite, a method for preparing the amorphous silicon-carbon composite using a pyrolysis method, a negative electrode for a lithium secondary battery, and a lithium secondary battery including the same.

Amorphous silicon-carbon composite, preparation method therefor, and lithium secondary battery comprising same

A sulfur-doped silicon negative electrode material, a preparation method for a sulfur-doped silicon negative electrode material, a negative electrode for a lithium secondary battery comprising the sulfur-doped silicon negative electrode material, and a lithium secondary battery comprising the negative electrode, wherein the sulfur-doped silicon negative electrode material has an internal pore channel having an average width of 500 nm to 3 μm and an average external diameter of 1 μm to 5 μm.

Sulfur-doped silicon negative electrode material, method for producing same, lithium secondary battery negative electrode including negative electrode material, and lithium secondary battery comprising negative electrode

A particle with a yolk-shell structure including a shell including carbon; and a care including silicon (Si) provided inside the shell, wherein at least a part of the shell is spaced apart from the core, and the particle with the yolk-shell structure has a micropore volume of 0.15 cm/g or less, and a method for preparing the same.

Yolk-shell structured particles, method for producing same, and lithium secondary battery comprising same

A solid polymer electrolyte composition and a solid polymer electrolyte are disclosed. More particularly, a solid polymer electrolyte composition and a solid polymer electrolyte formed by photocuring the same are disclosed, including a polymer (A) containing alkylene oxide and having one reactive double bond, a multifunctional cross-linkable polymer (B), and an ionic liquid, wherein the ionic liquid includes an amide-based solvent and a lithium salt.

Solid polymer electrolyte composition, and solid polymer electrolyte containing same

The present invention relates to a polymer electrolyte and a method for manufacturing same. More specifically, a polymer electrolyte with improved ion conductivity can be produced by adding boron nitride to a solid electrolyte comprising polysiloxane.

Solid electrolyte and method for manufacturing same

A polymer electrolyte is provided, which includes a polymer including an ethylene oxide unit; and a lithium salt, wherein the terminal of the polymer is substituted with one to four functional groups selected from the group consisting of a nitrogen compound functional group and phosphorus compound functional group, and the terminal of the polymer and the one to four functional groups are linked by one selected from the group consisting of a C2 to C20 alkylene linker, a C2 to C20 ether linker, and a C2 to C20 amine linker. A method for preparing the same is also provided.

Polymer electrolyte and method for producing same

A solid polymer electrolyte and a method of manufacturing the same are provided. More particularly, a solid polymer electrolyte having a high content of solids and exhibiting a flame retardant property and a method of manufacturing the same, wherein the solid polymer electrolyte includes a multifunctional acrylate-based polymer, a C2 to C10 polyalkylene oxide, a lithium salt and a non-aqueous solvent and wherein the multifunctional acrylate-based polymer is cross-linked with the polyalkylene oxide to form a semi-interpenetrating polymer network (semi-IPN).

Solid electrolyte, method for preparing same, and all-solid battery comprising same

A polymer solid electrolyte having high ion conductivity, heat resistance and dimensional stability, and having excellent oxidation stability and voltage stability, and a lithium secondary battery including the same.

Polymeric solid electrolyte and lithium secondary battery comprising same

An electrochemical pretreatment method of a vanadium positive electrode for a lithium secondary battery, which can improve the lifetime characteristics of the positive electrode and the battery by inhibiting the leaching of vanadium when charging and discharging the lithium secondary battery using, for instance, vanadium oxide (VO) as a positive electrode, and a vanadium positive electrode for a lithium secondary battery pretreated thereby. The electrochemical pretreatment method of the vanadium positive electrode for a lithium secondary battery includes a) a step of discharging the lithium free vanadium positive electrode at a voltage of 1.9 V or more; b) an electrochemical pretreatment step of maintaining the discharged vanadium positive electrode of a) at an onset potential value or a potential value having a maximum current through a potentiostat; and c) a step of charging and discharging the pretreated vanadium positive electrode of b) at a voltage range of 2.1V to 4.0V.

Method for electrochemical pretreatment of vanadium positive electrode for lithium secondary batteries and vanadium positive electrode for lithium secondary batteries pretreated thereby

A positive electrode material for lithium secondary batteries capable of easily doping vanadium oxide with molybdenum, and a method of manufacturing the same are disclosed. The method of manufacturing a positive electrode material for lithium secondary batteries includes (a) reacting vanadium oxide with a water-soluble molybdenum-based compound in the presence of a solvent; and (b) thermally treating the reaction product of (a).

Cathode material for lithium secondary battery, and preparation method therefor

A solid electrolyte composition for a lithium secondary battery including a fluorine-based polymer having grafted thereon a unit comprising alkylene oxide group and a crosslinkable functional group. The polymer may be formed by a process including grafting a monomer on a fluorine-based polymer, where the monomer includes alkylene oxide group and a crosslinkable functional group. Also disclosed is a solid electrolyte for a secondary battery formed by thermally curing the composition. By graft copolymerizing a monomer including alkylene oxide group and a crosslinkable functional group on a fluorine-based polymer having high lithium ion conductivity, the solid electrolyte is capable of providing a solid electrolyte for a secondary battery having significantly enhanced solid electrolyte ion conductivity and electrochemical stability.

Secondary battery solid electrolyte composition and solid electrolyte prepared therefrom

A polymer electrolyte including a poly(ethylene oxide) (PEO) containing polymer; and a lithium salt, wherein a terminal of the poly(ethylene oxide) containing polymer is substituted with a sulfur compound functional group, a nitrogen compound functional group or a phosphorus compound functional group, and a method for preparing the same and a battery containing the same.

Polymer electrolyte and preparation method therefor

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Daejeon, South Korea

Jonghyun Chae