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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 12155087 B1

PDFFull Text
Date of Patent:
Nov. 26, 2024

Filed:

May. 14, 2020

Separator for electrochemical device and electrochemical device comprising the same

Applicant:

Lg Energy Solution, Ltd., Seoul, KR;

Inventors:

Hyun-Woong Yun, Daejeon, KR;

Jong-Keon Yoon, Daejeon, KR;

Hoe-Jin Hah, Daejeon, KR;

Assignee:

LG ENERGY SOLUTION, LTD., Seoul, KR;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Christian Roldan

Assistant Examiner:

Robert Gene West

Int. Cl.
CPC ...
H01M 50/446 (2021.01); C08F 214/26 (2006.01); C08F 216/14 (2006.01); C08J 7/04 (2020.01); C08J 7/044 (2020.01); C08J 9/36 (2006.01); C08K 3/22 (2006.01); C09D 5/24 (2006.01); C09D 7/61 (2018.01); C09D 127/18 (2006.01); C09D 127/22 (2006.01); C09D 129/10 (2006.01); H01M 10/052 (2010.01); H01M 50/417 (2021.01); H01M 50/426 (2021.01); H01M 50/443 (2021.01); H01M 50/449 (2021.01); H01M 50/451 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); H01M 50/497 (2021.01);
U.S. Cl.
CPC ...
H01M 50/446 (2021.01); C08J 9/365 (2013.01); C09D 5/24 (2013.01); C09D 7/61 (2018.01); C09D 127/22 (2013.01); H01M 10/052 (2013.01); H01M 50/426 (2021.01); H01M 50/443 (2021.01); H01M 50/449 (2021.01); H01M 50/491 (2021.01); C08J 2323/06 (2013.01); C08J 2327/22 (2013.01); H01M 50/489 (2021.01);
Abstract

A separator for an electrochemical device comprising a porous polymer substrate, and a porous coating layer on at least one surface of the porous polymer substrate. The porous coating layer comprises inorganic particles and an ion conducting polymer. The ion conducting polymer comprises a fluorine-based copolymer comprising fluoroolefin-based segments with anionic functional groups present in side chains or terminals, and an electrochemical device comprising the same. It is possible to provide a separator with high ionic conductivity and an increased peel strength between the porous polymer substrate and the porous coating layer, and an electrochemical device with improved properties.

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