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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 10734678 B1

PDFFull Text
Date of Patent:
Aug. 04, 2020

Filed:

Feb. 20, 2017

Composition for gel polymer electrolyte and lithium secondary battery including the same

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Jeong Woo Oh, Daejeon, KR;

Kyoung Ho Ahn, Daejeon, KR;

Chul Haeng Lee, Daejeon, KR;

Yi Jin Jung, Daejeon, KR;

Sol Ji Park, Daejeon, KR;

Assignee:

LG Chem, Ltd., , KR;

Attorney:

Lerner, David, Littenberg, Krumholz & Menlik, LLP

Primary Examiner:

Laura Weiner

Int. Cl.
CPC ...
H01M 10/0565 (2010.01); H01M 4/131 (2010.01); H01M 10/0569 (2010.01); H01M 10/0568 (2010.01); H01M 10/052 (2010.01); C09D 175/04 (2006.01); H01M 2/10 (2006.01); C08F 220/44 (2006.01); C08G 18/70 (2006.01); C08G 18/72 (2006.01); C08G 63/02 (2006.01); C08K 5/14 (2006.01); C08K 5/23 (2006.01); C08L 75/16 (2006.01); H01M 10/0525 (2010.01); H01M 10/0567 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0565 (2013.01); C08F 220/44 (2013.01); C08G 18/702 (2013.01); C08G 18/728 (2013.01); C08G 63/02 (2013.01); C08K 5/14 (2013.01); C08K 5/23 (2013.01); C08L 75/16 (2013.01); C09D 175/04 (2013.01); H01M 2/10 (2013.01); H01M 4/131 (2013.01); H01M 10/052 (2013.01); H01M 10/0525 (2013.01); H01M 10/0567 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0094 (2013.01); Y02T 10/7011 (2013.01);
Abstract

The present invention relates to a composition for a gel polymer electrolyte and a lithium secondary battery including the same, and more specifically, an objective of the present invention is to provide a secondary battery in which, since an isocyanate-containing monomer is introduced to a composition for a gel polymer electrolyte to induce a urethane reaction with LiOH on a surface of a lithium transition metal oxide to form a coating layer including a urethane bond-containing oligomer on the surface of the lithium transition metal oxide, and thereby side reactions caused by HF in the battery are minimized, capacity characteristics are improved, and adhesion between a positive electrode and a separator is enhanced to minimize the swelling phenomenon of the battery.

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