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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11664485 B1

PDFFull Text
Date of Patent:
May. 30, 2023

Filed:

Apr. 27, 2018

Method for manufacturing lithium secondary battery

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Yoonah Kang, Daejeon, KR;

Eun Kyung Kim, Daejeon, KR;

Sangwook Woo, Daejeon, KR;

Assignee:

LG ENERGY SOLUTION, LTD., Seoul, KR;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Zhongqing Wei

Int. Cl.
CPC ...
H01M 4/04 (2006.01); H01M 4/1391 (2010.01); H01M 4/1395 (2010.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01); H01M 4/36 (2006.01); H01M 4/48 (2010.01); H01M 10/0525 (2010.01); H01M 10/0585 (2010.01); H01M 50/443 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/0419 (2013.01); H01M 4/0407 (2013.01); H01M 4/1391 (2013.01); H01M 4/1395 (2013.01); H01M 4/366 (2013.01); H01M 4/382 (2013.01); H01M 4/483 (2013.01); H01M 4/622 (2013.01); H01M 10/0525 (2013.01); H01M 10/0585 (2013.01); H01M 50/443 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); H01M 2004/027 (2013.01);
Abstract

A method for manufacturing a lithium secondary battery including a pre-lithiated negative electrode. A composite of lithium and a negative electrode active material is formed through a lamination process which is a process of manufacturing a battery. In the case of the lithium secondary battery to which the negative electrode having the composite formed by lithium and the negative electrode active material is applied, when the battery starts to operate, the negative electrode active material is pre-lithiated, and thus the charging/discharging process proceeds in the state where the lithium alloy is already formed on the negative electrode, thereby showing an effect of reducing initial irreversible phases.

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