公开(公告)号：US11233273B2

公开(公告)日：2022-01-25

申请号：US16348372

申请日：2018-09-03

Applicant: LG CHEM, LTD.

Inventor： Jun-Hyeok Han ,  Kyoung-Ho Ahn ,  Sol-Ji Park ,  Chul-Haeng Lee

IPC: H01L31/18 ,  H01M10/04 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/058 ,  H01M10/44 ,  H01M4/04 ,  H01M4/131 ,  H01M4/134 ,  G01R31/389 ,  H01G11/34 ,  H01L31/0224 ,  H01M6/50 ,  H01M8/04302

Abstract: A method for manufacturing an electrochemical device includes a discharge pretreatment step, where, external electric power is applied to a battery to discharge the battery, before charging the battery for the first time to perform formation of the battery, in order to remove a byproduct layer on the surface of a negative electrode. The method including the discharge pretreatment step before the first charge of a battery can improve the cycle life of an electrochemical device.