Lg Chem, Ltd

Lg Energy Solution, Ltd.

Lg Chemical Ltd.

Sung Joon Oh

In Young Song

Jeong Kyu Lee

Heon Kim

Hye Won Jeong

Min Young Lim

Keon Woo Lee

Sung Ho Chun

Sung Soo Yoon

Jung Keun Kim

Yeon Joo Kang

Yeong Rae Chang

Je Gwon Lee

Jin Seok Byun

Kyungjun Kim

Boo Kyung Kim

Seok Hoon Jang

Kyung Jun Kim

Joo Yul Baek

Jong Chan Lee

Jong Soo Do

Jungho Jo

Su Jin Kim

Ki-Hwan Kim

Sung-Ho Chun

Jung Ho Jo

Yi Young Choi

No Jin Park

Eun Young Choi

Se Jin Ku

Mi Sook Lee

Sung Min Lee

Seul Ki Im

Sung Ho Park

Kyoung Hwan Oh

Soon Ho Sun

Jin Hyong Lim

Suk Youn Kang

Seyoung Kim

Eun Jeong Lee

Woo Jin Cho

Shin Wook Jeon

Jinyoung Lee

Kyung-Jun Kim

Byung Hyun Lee

Joon Hee Cho

Jin Sook Ryu

Wan Kyu Oh

Hyojoon Lee

Jeong Hun Cho

Jeongkyu Lee

Chang Hwan Jang

Pum Suk Park

Chang Hun Kim

Jisoo Song

Hyo Yong Kim

Sun Ok Oh

Jin Oh Song

Ji Hyun Jun

Yujin An

Yeon Wook Jung

Choong Min Yi

Yeonji Choe

Byung Hyun 302-904 Songgang Green Apt Lee

Min Young 202 Yein Art Ville Lim

Hye Won 9-402 Lg Chemistry Partner Apt Jeong

Keon Woo 508-1901 Sunbi Maeul Apt 5 Lee

Kyung Jun 12-204 Uni Of Science & Tech Kim

The present invention relates to an electrode for a secondary battery in which a first electrode material mixture layer including a first negative electrode active material, a first conductive agent, and a first binder is formed on a current collector, and a second electrode material mixture layer including a second negative electrode active material, a second conductive agent, and a second binder is formed on the first electrode material mixture layer, wherein the first negative electrode active material and the second negative electrode active material each include at least one selected from the group consisting of natural graphite and artificial graphite, and when the electrode is analyzed by a shear strength analysis method, a ratio of a maximum value (σ) to a minimum value (σ) in a simplified shear strength (σ) profile is 1.7 or less.

Electrode for secondary battery and lithium secondary battery comprising the same

The present invention relates to an active material analysis apparatus for analyzing an active material of a battery. An active material analysis apparatus of the present invention may comprise: a lower plate at which an electrode is located; an upper plate which is coupled to the lower plate with the electrode disposed therebetween; a sealing member positioned at a joint part between the upper plate and the lower plate; and a coupling member for coupling the upper plate and the lower plate, wherein: the upper plate includes an opening provided to allow a light source to be radiated to the electrode; an electrolyte is filled in a space between the upper plate and the lower plate; the opening is covered by glass; and the upper plate faces a liquid surface formed by the electrolyte and is positioned at a position higher than that of the liquid surface.

Active material analysis apparatus

A method for quantitatively analyzing cohesive failure of an electrode analyzes cohesive failure of an electrode and includes preparing an electrode in which an electrode material mixture layer including an electrode active material, a conductive agent, and a binder is formed on a current collector, measuring shear strength (&#x3c3;) data according to a cutting depth while cutting the electrode material mixture layer from a surface thereof until reaching the current collector using a surface and interfacial cutting analysis system (SAICAS), obtaining a regression curve of shear strength according to the cutting depth from the shear strength (&#x3c3;) data, and determining a cutting depth, at which the shear strength is minimum in the regression curve, as a location of cohesive failure.

Method for analyzing cohesive failure of electrode

The present invention relates to polyolefin. More specifically, the present invention relates to polyolefin having excellent dart drop impact strength, and exhibiting improved transparency, and such polyolefin has a density of 0.915 g/cm3 to 0.930 g/cm3 measured according to ASTM D1505; and satisfies the following requirements (provided that S1+S2+S3=1), when measuring the relative content of peak area according to melting temperature (Tm) using SSA (Successive Self-nucleation and Annealing) analysis: the content(S1) of peak area at Tm less than 100&#xb0; C. is 0.33 to 0.35; the content(S2) of peak area at Tm of 100&#xb0; C. or more and 120&#xb0; C. or less is 0.52 to 0.56; and the content(S3) of peak area at Tm greater than 120&#xb0; C. is 0.10 to 0.14.

Polyolefin

The present invention relates to a method for producing a polyacrylonitrile-based fiber, wherein the method polymerizes a monomer mixture including an acrylonitrile-based monomer, a carboxylic acid-based comonomer, and an acrylate-based comonomer, wherein the acrylate-based comonomer includes the steps of producing a polyacrylonitrile-based copolymer so as to be included in an amount of 4 to 20 parts by weight based on 100 parts by weight of the monomer mixture, fiberizing the polyacrylonitrile-based copolymer, oxidizing and stabilizing the fiberized polyacrylonitrile-based copolymer, which may control the oxidation stabilization reaction, particularly the cyclization reaction. Accordingly, the energy consumption of the oxidation stabilization reaction may be reduced, economical efficiency of the production of polyacrylonitrile-based fiber may be obtained, and the physical and mechanical properties of the carbon fiber may be improved.

Method for producing polyacrylonitrile-based fiber and polyacrylonitrile-based copolymer used therein

The present invention relates to a rubber composition having excellent tensile properties and viscoelasticity properties and including a modified conjugated diene-based polymer. The rubber composition may include a modified conjugated diene-based polymer which is selected considering target tensile properties and viscoelasticity properties, by predicting in advance the correlation of the modification ratio of the modified conjugated diene-based polymer and the dynamic viscoelasticity loss coefficient at 60&#xb0; C. of the rubber composition through Mathematical Formula 1 and Mathematical Formula 2. Therefore, excellent compounding properties may be shown.

Rubber composition

The present invention relates to a method for characterizing a polyacrylonitrile-based fiber, the method having a reduced error. In a spectroscopic analysis method for a polyacrylonitrile-based fiber according to the present invention, a contact degree between an inspection target and an attenuated total reflection crystal is predicted through Equation 2 and is applied to Equation 1 to correct a spectrum peak height, and thus, the peak height of the infrared spectroscopy spectrum may be measured with repeatability.

Method for analyzing infrared spectroscopy spectrum of polyacrylonitrile-based fiber

Disclosed herein is an anti-reflective film including: a hard coating layer; and a low-refractive layer containing a binder resin, and hollow inorganic nanoparticles and solid inorganic nanoparticles which are dispersed in the binder resin, wherein the low-refractive layer includes a first layer containing at least 70 vol % of the entire solid inorganic nanoparticles and a second layer containing at least 70 vol % of the entire hollow inorganic nanoparticles, and at the time of fitting polarization ellipticity measured by ellipsometry for the first layer or/and the second layer included in the low-refractive layer using a Cauchy model represented by the following General Equation 1, the second layer satisfies a predetermined condition.

Anti-reflective film

The present invention relates to an ethylene/alpha-olefin copolymer and, more particularly, to an ethylene/alpha-olefin copolymer that exhibits excellent environmental stress crack resistance by appropriately controlling the ratio of crystal structure domain and amorphous domain, and the like. The ethylene/alpha-olefin copolymer comprises an ethylene repeating unit and an alpha-olefin repeating unit, and has a crystal structure including a crystalline domain containing lamellar crystals and an amorphous domain containing a tie molecule that mediates bonding between the lamellar crystals. The lamellar crystal thickness (dc) of the ethylene/alpha-olefin copolymer as calculated from the result of Small Angle X-ray Scattering (SAXS) analysis is between 12.0 and 16.0 nm, the amorphous domain thickness (da) is between 4.0 and 5.3 nm, and the thickness ratio da/dc is between 0.3 and 0.4.

Ethylene/alpha-olefin copolymer

The present application relates to a block copolymer and its use. The present application can provides a block copolymer that has an excellent self assembling property or phase separation property and therefore can be used in various applications and its use.

Block copolymer

The present invention relates to an electrode, a method for manufacturing same, and a battery comprising the electrode. An electrode and a method for manufacturing same can be provided wherein the electrode of the present invention prevents a segregation phenomenon by which a binder is concentrated on the surface of the electrode, thereby comprising an active layer exhibiting excellent peel strength on a current collector.

Electrode and method for manufacturing same

The present application provides the block copolymers and their application. The present application may provide the block copolymers that have excellent self assembling and phase separation properties and therefore that can be effectively used in various applications. The present application may also provide applications of the block copolymers.

Growing community of inventors

Daejeon Metropolitan, South Korea

Sung Joon Oh