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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 9972834 B1

PDFFull Text
Date of Patent:
May. 15, 2018

Filed:

Jun. 18, 2014

Cathode active material for lithium secondary battery and method for manufacturing the same

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Woo-Yeon Kong, Daejeon, KR;

Myung-Ki Lee, Daejeon, KR;

Min-Suk Kang, Daejeon, KR;

Sun-Sik Shin, Daejeon, KR;

Hye-Lim Jeon, Daejeon, KR;

Chi-Ho Jo, Daejeon, KR;

Geun-Gi Min, Daejeon, KR;

Wang-Mo Jung, Daejeon, KR;

Assignee:

LG Chem, Ltd., , KR;

Attorney:

Lerner, David, Littenburg, Krumholz & Mentlik, LLP

Primary Examiner:

Laura Weiner

Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/1315 (2010.01); H01M 4/525 (2010.01); H01M 4/04 (2006.01); H01M 4/13915 (2010.01); H01M 4/505 (2010.01); H01M 4/131 (2010.01); H01M 4/1391 (2010.01); C01G 53/00 (2006.01); H01M 4/139 (2010.01); H01M 4/02 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); C01G 53/50 (2013.01); H01M 4/0419 (2013.01); H01M 4/0421 (2013.01); H01M 4/0471 (2013.01); H01M 4/131 (2013.01); H01M 4/139 (2013.01); H01M 4/1315 (2013.01); H01M 4/1391 (2013.01); H01M 4/13915 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); C01P 2002/20 (2013.01); C01P 2004/03 (2013.01); C01P 2004/80 (2013.01); C01P 2006/40 (2013.01); H01M 10/052 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01); H01M 2220/20 (2013.01); Y02E 60/122 (2013.01); Y02P 70/54 (2015.11);
Abstract

The present disclosure relates to a cathode active material for a lithium secondary battery with improved rate characteristics in which a spinel surface structure is formed by fluorine coating on a surface of layered lithium nickel-manganese-cobalt cathode active material and a method for manufacturing the same, and according to the present disclosure, there is provided a lithium secondary battery with improved rate characteristics that may be charged to a capacity close to a full charge in a short time when compared to a related art and thus is suitable for high capacity of a secondary battery.

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