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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 11031656 B1

PDFFull Text
Date of Patent:
Jun. 08, 2021

Filed:

May. 02, 2018

Composite separator including porous coating layer made from slurry having improved dispersibility

Applicants:

Lg Chem, Ltd., Seoul, KR;

Toray Industries, Inc., Tokyo, JP;

Inventors:

Joo-Sung Lee, Daejeon, KR;

Su-Jin Yoon, Daejeon, KR;

Da-Kyung Han, Daejeon, KR;

Bo-Kyung Ryu, Daejeon, KR;

Jong-Hun Kim, Daejeon, KR;

Assignees:

LG Chem, Ltd.;

TORAY INDUSTRIES, INC.;

Attorney:

Lerner, David, Littenberg, Krumholz & Mentlik, LLP

Primary Examiner:

Sean P Cullen

Int. Cl.
CPC ...
H01M 50/446 (2021.01); H01M 50/403 (2021.01); H01M 50/409 (2021.01); H01M 10/052 (2010.01); H01M 10/0525 (2010.01); H01M 4/04 (2006.01); H01M 4/13 (2010.01); H01M 4/139 (2010.01); H01M 4/131 (2010.01); H01M 4/133 (2010.01); H01M 4/134 (2010.01); H01M 4/136 (2010.01); H01M 4/137 (2010.01); H01M 4/1391 (2010.01); H01M 4/1393 (2010.01); H01M 4/1395 (2010.01); H01M 4/1397 (2010.01); H01M 4/1399 (2010.01); H01M 4/62 (2006.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 50/446 (2021.01); H01M 4/0404 (2013.01); H01M 4/13 (2013.01); H01M 4/139 (2013.01); H01M 50/403 (2021.01); H01M 50/409 (2021.01); H01M 4/131 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/136 (2013.01); H01M 4/137 (2013.01); H01M 4/1391 (2013.01); H01M 4/1393 (2013.01); H01M 4/1395 (2013.01); H01M 4/1397 (2013.01); H01M 4/1399 (2013.01); H01M 4/622 (2013.01); H01M 10/052 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01);
Abstract

The present disclosure relates to an invention directed to a composite separator having a porous coating layer, where the porous coating layer is prepared from a slurry by adjusting a particle diameter of an inorganic matter that is an ingredient of the slurry, so that a sinking rate of the inorganic particles may remarkably slow down and dispersibility may be dramatically improved, and as a result, the content of the inorganic particles may relatively increase and the inorganic particles may be uniformly distributed in the coating layer on a substrate, thereby preventing a reduction in battery performance.

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