公开(公告)号：US20190020016A1

公开(公告)日：2019-01-17

申请号：US16066470

申请日：2017-11-16

Applicant: LG CHEM, LTD.

Inventor： Byoung-Hoon AHN ,  Sang-Hoon CHOY ,  Hyun-Sik CHAE

IPC: H01M4/131 ,  H01M4/525 ,  H01M4/62

Abstract: Disclosed is a method for preparing positive electrode active material slurry, which includes the steps of: (S1) preparing a positive electrode active material, a linear conductive material, a polymer binder and a solvent; (S2) introducing 40-80% of the prepared polymer binder, the positive electrode active material and the linear conductive material to the solvent, followed by mixing, to obtain a first positive electrode active material slurry; and (S3) further introducing the remaining polymer binder to the first positive electrode active material slurry, followed by mixing, to obtain a second positive electrode active material slurry.

公开(公告)号：US20210249694A1

公开(公告)日：2021-08-12

申请号：US16972828

申请日：2019-11-01

Applicant: LG CHEM, LTD.

Inventor： Byoung-Hoon AHN ,  Sang-Kyun LEE ,  Hae-Kang CHUNG ,  Baeck-Boem CHOI ,  Sang-Hoon CHOY

IPC: H01M10/0585 ,  H01M10/0562 ,  H01M10/0525

Abstract: Provided is a method for manufacturing an all-solid-state battery which allows a solid electrolyte layer and an electrode to be in sufficiently close in contact with each other without deformation of the electrode shape or damages upon the electrode. The method for manufacturing an all-solid-state battery includes applying slurry for a solid electrolyte layer to the surface of an electrode active material layer to form a patterned solid electrolyte layer, and carrying out pressurization to form a solid electrolyte layer.

公开(公告)号：US20200067071A1

公开(公告)日：2020-02-27

申请号：US16610644

申请日：2018-11-09

Applicant: LG CHEM, LTD.

Inventor： Byoung-Hoon AHN ,  Jung-Min YANG ,  Sang-Hoon CHOY

IPC: H01M4/13 ,  H01M10/0587 ,  H01M10/052 ,  H01M4/36

Abstract: The present disclosure relates to a strip-like electrode for use in a cylindrical jelly roll which includes a strip-like electrode assembly wound cylindrically to form a hollow cavity at the core portion thereof, and a lithium secondary battery including the same. The strip-like electrode includes: a strip-like electrode current collector; a first electrode active material layer formed on at least one surface of the strip-like electrode current collector; and a second electrode active material layer formed on the first electrode active material layer, wherein the second electrode active material layer is formed to have a length smaller than the length of the first electrode active material layer so that a part of one longitudinal surface of the first electrode active material layer can be exposed to the outside.