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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 10938036 B1

PDFFull Text
Date of Patent:
Mar. 02, 2021

Filed:

Sep. 10, 2015

Method of preparing positive electrode material for lithium secondary battery, positive electrode material for lithium secondary battery, and lithium secondary battery including the positive electrode material

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Ick Soon Kwak, Daejeon, KR;

Seung Beom Cho, Daejeon, KR;

Yeo June Yoon, Daejeon, KR;

Sung Wook Mhin, Daejeon, KR;

Assignee:

LG Chem, Ltd.;

Attorney:

Lerner, David, Littenberg, Krumholz & Mentlik, LLP

Primary Examiner:

Ula C Ruddock

Assistant Examiner:

Anna Korovina

Int. Cl.
CPC ...
H01M 4/62 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/04 (2006.01); B01J 13/00 (2006.01); H01M 4/131 (2010.01); H01M 4/38 (2006.01); H01M 10/0525 (2010.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01); H01M 4/02 (2006.01); H01M 4/1391 (2010.01); H01M 4/66 (2006.01); H01M 10/0585 (2010.01);
U.S. Cl.
CPC ...
H01M 4/628 (2013.01); B01J 13/0047 (2013.01); H01M 4/0402 (2013.01); H01M 4/0419 (2013.01); H01M 4/0471 (2013.01); H01M 4/131 (2013.01); H01M 4/382 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 4/0404 (2013.01); H01M 4/1391 (2013.01); H01M 4/661 (2013.01); H01M 10/0585 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2220/30 (2013.01); H01M 2300/0028 (2013.01); Y02T 10/70 (2013.01);
Abstract

The present invention relates to a method of preparing a positive electrode material for a lithium secondary battery including a first step of synthesizing a lithium transition metal oxide represented by Chemical Formula 1, a second step of preparing lithium transition metal oxide powder by grinding the lithium transition metal oxide, a third step of preparing a positive electrode material including an alumina coating layer by mixing as well as dispersing the lithium transition metal oxide powder in an alumina nanosol, and a fourth step of drying the positive electrode material, a positive electrode material for a lithium secondary battery prepared by the above method, and a lithium secondary battery including the positive electrode material,Li(NiMnCo)O  [Chemical Formula 1]

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