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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 11056682 B1

PDFFull Text
Date of Patent:
Jul. 06, 2021

Filed:

Jul. 27, 2017

Positive electrode active material particle including core including lithium cobalt oxide and shell including lithium cobalt phosphate and preparation method thereof

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Younguk Park, Daejeon, KR;

Chi Ho Jo, Daejeon, KR;

Bo Ram Lee, Daejeon, KR;

Sungbin Park, Daejeon, KR;

Hyuck Hur, Daejeon, KR;

Wang Mo Jung, Daejeon, KR;

Assignee:

LG Chem, Ltd.;

Attorney:

Lerner, David, Littenberg, Krumholz & Mentlik, LLP

Primary Examiner:

Kwang Han

Int. Cl.
CPC ...
H01M 4/1315 (2010.01); H01M 4/13915 (2010.01); H01M 4/36 (2006.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 4/131 (2010.01); H01M 4/1397 (2010.01); H01M 4/136 (2010.01); H01M 4/1391 (2010.01); H01M 4/58 (2010.01); H01M 10/0567 (2010.01); H01M 4/02 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/1315 (2013.01); H01M 4/131 (2013.01); H01M 4/136 (2013.01); H01M 4/1391 (2013.01); H01M 4/1397 (2013.01); H01M 4/13915 (2013.01); H01M 4/364 (2013.01); H01M 4/366 (2013.01); H01M 4/525 (2013.01); H01M 4/5825 (2013.01); H01M 10/0525 (2013.01); H01M 10/0567 (2013.01); H01M 10/052 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0025 (2013.01); Y02E 60/10 (2013.01);
Abstract

Provided is a positive electrode active material particle including a core that includes lithium cobalt oxide represented by the following Chemical Formula 1; and a shell that is located on the surface of the core and includes lithium cobalt phosphate represented by the following Chemical Formula 2, wherein the shell has a tetrahedral phase:LiCoMOA  (1) wherein M is at least one of Ti, Mg, Zn, Si, Al, Zr, V, Mn, Nb, or Ni, A is oxygen-substitutional halogen, and 0.95≤a≤1.05, 0≤x≤0.2, 0≤y≤0.2, and 0≤x+y≤0.2,LiCoPO  (2) wherein 0≤b≤1.

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