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. 06, 2019
Filed:
Dec. 14, 2015
Applicant:
SK Innovation Co., Ltd., Seoul, KR;
Inventors:
Assignee:
SK Innovation Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/485 (2010.01); H01M 4/525 (2010.01); H01M 4/505 (2010.01); H01M 4/36 (2006.01); C01G 53/00 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/485 (2013.01); C01G 53/42 (2013.01); C01G 53/50 (2013.01); H01M 4/364 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); C01P 2002/52 (2013.01); C01P 2002/54 (2013.01); C01P 2004/03 (2013.01); C01P 2004/61 (2013.01); C01P 2006/40 (2013.01); H01M 4/362 (2013.01); H01M 10/052 (2013.01);
Abstract
The present invention relates to a lithium secondary battery, and more specifically, to a lithium secondary battery including a cathode, an anode and a non-aqueous electrolyte solution, where the cathode includes a cathode active material including a lithium-metal oxide which is doped with a transition metal and includes at least one type of metal having a concentration gradient region between a central portion and a surface portion, and thus having a significantly increased charge/discharge capacity and output at a low temperature to exhibit excellent properties in the low-temperature environment.