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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 12074341 B1

PDFFull Text
Date of Patent:
Aug. 27, 2024

Filed:

Jun. 27, 2023

Separator including coating layer of lithium-containing composite, lithium secondary battery including the same, and method for manufacturing the secondary battery

Applicant:

Lg Energy Solution, Ltd., Seoul, KR;

Inventors:

Oh-Byong Chae, Daejeon, KR;

Sang-Wook Woo, Daejeon, KR;

Je-Young Kim, Daejeon, KR;

Assignee:

LG ENERGY SOLUTION, LTD., Seoul, KR;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Anca Eoff

Int. Cl.
CPC ...
H01M 50/46 (2021.01); H01M 4/02 (2006.01); H01M 4/1391 (2010.01); H01M 4/1393 (2010.01); H01M 4/1395 (2010.01); H01M 4/36 (2006.01); H01M 4/525 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 10/0569 (2010.01); H01M 50/403 (2021.01); H01M 50/449 (2021.01);
U.S. Cl.
CPC ...
H01M 50/46 (2021.01); H01M 4/1391 (2013.01); H01M 4/1393 (2013.01); H01M 4/1395 (2013.01); H01M 4/366 (2013.01); H01M 4/525 (2013.01); H01M 4/621 (2013.01); H01M 10/0525 (2013.01); H01M 10/0569 (2013.01); H01M 50/403 (2021.01); H01M 50/449 (2021.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01);
Abstract

A separator including: a porous polymer substrate having a plurality of pores; and a coating layer formed on at least one surface of the porous polymer substrate, and including a plurality of lithium-containing composite particles and a binder positioned on the whole or a part of the surface of the lithium-containing composite particles to connect and fix the lithium-containing composite particles with each other, wherein the lithium-containing composite particles includes a lithiated compound and a passivation film formed on the surface of the lithiated compound, and the passivation film includes a solid electrolyte interface (SEI). A lithium secondary battery including the separator and a method for manufacturing the lithium secondary battery are also provided.

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