Lg Chem, Ltd

Lg Energy Solution, Ltd.

Xinmei Fontana Holding (hong Kong) Limited

Jeong Kyu Lee

Sung Joon Oh

Sung Soo Yoon

Jung Keun Kim

In Young Song

Je Gwon Lee

Yeong Rae Chang

No Jin Park

Jin Seok Byun

Eun Young Choi

Se Jin Ku

Mi Sook Lee

Boo Kyung Kim

Seok Hoon Jang

Yeon Joo Kang

Joo Yul Baek

Jong Chan Lee

Yi Young Choi

Hyung Ju Ryu

Soon Ho Sun

Joon Hee Cho

Jeong Hun Cho

Pum Suk Park

Chang Hun Kim

Jong Soo Do

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

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 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 an anti-reflective film exhibiting one or more peaks (q) at a scattering vector of 0.0758 to 0.1256 nm, in a graph showing a log value of scattering intensity to a scattering vector defined in small-angle X-ray scattering.

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 anti-reflective film exhibiting one or more peaks at a scattering vector (q) of 0.0758 to 0.1256 nm, in a graph showing a log value of scattering intensity to a scattering vector defined in small-angle X-ray scattering.

The present application relates to a block copolymer and uses thereof. The present application can provide a block copolymer&#x2014;which exhibits an excellent self-assembling property and thus can be used effectively in a variety of applications&#x2014;and uses thereof.

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.

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Daejeon, South Korea

Jeong Kyu Lee