Lg Energy Solution, Ltd.

Lg Chem, Ltd

Chan-Soo Jun

Sang-Hoon Choy

Ki-Tae Kim

Taek-Soo Lee

Jin-Young Son

Byoung-Hoon Ahn

Hyung-Suk Cho

Jung-Min Yang

Young-Jae Kim

Jung-Woo Yoo

Ye-Lin Kim

Kyung-Taek Kim

Complex particles for a negative electrode active material according to the present disclosure have no problem with reduced capacity and output by virtue of sufficient electrochemical reaction sites between a solid electrolyte and an electrode active material. The complex particles according to the present disclosure include carbon particles of a carbon material such as flaky graphite, which are spherical in shape by shape modification, and a solid electrolyte and a conductive material filled between the particles, and thus have the increased contact area between the active material and the solid electrolyte increases, and ion conduction and electron conduction paths extended and maintained to the inside of the active material particles.

Complex particles for negative electrode active material and negative electrode for all-solid type battery comprising the same

A negative electrode for a lithium secondary battery having excellent dispersibility, adhesion and tensile strength, and a lithium secondary battery including the same. The negative electrode for a lithium secondary battery includes negative electrode active material particles, a conductive material and a binder. The binder includes a copolymer comprising acrylamide monomer-derived repeating units, acrylic acid monomer-derived repeating units, sodium acrylate monomer-derived repeating units and acrylonitrile monomer-derived repeating units. The combined weight of the acrylic acid monomer-derived repeating units and sodium acrylate monomer-derived repeating units in the copolymer is 25 wt % to 35 wt %. The negative electrode active material particles are silicon-based negative electrode active material particles.

Binder for negative electrode of lithium secondary battery and negative electrode for lithium secondary battery including the same

Disclosed is a system for manufacturing an electrode for a secondary battery, which includes an active material drying unit configured to dry an active material coated on an electrode current collector, and a tester unit configured to measure a dried state of the active material by performing a scratch test to the dried active material.

System for manufacturing electrode for secondary battery having scratch tester

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Daejeon, South Korea

Chan-Soo Jun