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.:
Date of Patent:
Aug. 25, 2020
Filed:
Jul. 28, 2017
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/00 (2006.01); H01M 4/1393 (2010.01); H01M 4/38 (2006.01); H01M 4/1399 (2010.01); H01M 4/136 (2010.01); H01M 4/60 (2006.01); H01M 4/62 (2006.01); H01M 4/133 (2010.01); H01M 4/137 (2010.01); C08K 3/06 (2006.01); H01M 4/58 (2010.01); H01M 4/36 (2006.01); H01M 4/583 (2010.01); H01M 10/0569 (2010.01); H01M 10/052 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/1393 (2013.01); C08K 3/06 (2013.01); H01M 4/133 (2013.01); H01M 4/136 (2013.01); H01M 4/137 (2013.01); H01M 4/1399 (2013.01); H01M 4/364 (2013.01); H01M 4/38 (2013.01); H01M 4/583 (2013.01); H01M 4/5815 (2013.01); H01M 4/602 (2013.01); H01M 4/608 (2013.01); H01M 4/621 (2013.01); H01M 4/625 (2013.01); H01M 10/0569 (2013.01); H01M 10/052 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); Y02E 60/122 (2013.01); Y02T 10/7011 (2013.01);
Abstract
The present invention relates to a positive electrode active material for a lithium-sulfur battery containing polyimide, more specifically, a positive electrode active material formed by complexing the composite of polyimide and carbon-based secondary particles with sulfur particles, a preparation method thereof and a lithium-sulfur battery comprising the same. If the positive electrode active material formed by including and complexing the polyimide according to the present invention is applied to the lithium-sulfur battery, the elution of the polysulfide is suppressed, and thus lifetime characteristics and energy efficiency are improved.