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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 10141567 B1

PDFFull Text
Date of Patent:
Nov. 27, 2018

Filed:

Jun. 02, 2016

Cathode active material for lithium secondary battery, method of preparing the same, and lithium secondary battery containing the same

Applicant:

L&f Co., Ltd., Daegu, KR;

Inventors:

Su An Choi, Daegu, KR;

Ho Jun Jeong, Daegu, KR;

Sang Hoon Jeon, Daegu, KR;

Ji Woon Yang, Daegu, KR;

Jun Ho Shin, Daegu, KR;

Ji Sun An, Daegu, KR;

Bong Jun Jeong, Daegu, KR;

Assignee:

L&F CO., LTD., Daegu, KR;

Attorney:

Lex IP Meister, PLLC

Primary Examiner:

Kenneth J Douyette

Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/136 (2010.01); H01M 4/1315 (2010.01); H01M 10/0525 (2010.01); H01M 4/48 (2010.01); H01M 4/525 (2010.01); H01M 4/62 (2006.01); H01M 4/04 (2006.01); H01M 4/13915 (2010.01); H01M 4/1397 (2010.01); H01M 4/485 (2010.01); H01M 4/50 (2010.01); H01M 4/505 (2010.01); H01M 4/52 (2010.01); H01M 4/58 (2010.01); H01M 10/052 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); H01M 4/0402 (2013.01); H01M 4/0471 (2013.01); H01M 4/136 (2013.01); H01M 4/1315 (2013.01); H01M 4/1397 (2013.01); H01M 4/13915 (2013.01); H01M 4/483 (2013.01); H01M 4/485 (2013.01); H01M 4/502 (2013.01); H01M 4/505 (2013.01); H01M 4/523 (2013.01); H01M 4/525 (2013.01); H01M 4/582 (2013.01); H01M 4/5825 (2013.01); H01M 4/62 (2013.01); H01M 10/0525 (2013.01); H01M 10/052 (2013.01); H01M 2004/028 (2013.01);
Abstract

There are provided a cathode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery containing the same. The cathode active material for a lithium secondary battery includes: a core made of a compound reversibly intercalating and deintercalating lithium; and a coating layer positioned on at least a portion of a surface of the compound, wherein the coating layer is a composite coating layer containing LiPOand LiF, and further containing a lithium metal compound, a metal oxide, a metal fluoride compound, and/or a combination thereof, and the core is doped with fluorine.

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