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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 11283058 B1

PDFFull Text
Date of Patent:
Mar. 22, 2022

Filed:

Mar. 22, 2018

Method of preparing slurry composition for secondary battery positive electrode, positive electrode for secondary battery prepared by using the same, and lithium secondary battery including the positive electrode

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Byoung Hoon Ahn, Daejeon, KR;

Houng Sik Yoo, Daejeon, KR;

Gye Min Kwon, Daejeon, KR;

Sang Hoon Choy, Daejeon, KR;

Assignee:

LG Energy Solution, Ltd.;

Attorney:

Lerner, David, Littenberg, Krumholz & Mentlik, LLP

Primary Examiner:

Cynthia H Kelly

Assistant Examiner:

Monique M Wills

Int. Cl.
CPC ...
H01M 4/00 (2006.01); H01M 4/04 (2006.01); H01M 4/36 (2006.01); H01M 4/525 (2010.01); H01M 4/58 (2010.01); H01M 4/62 (2006.01); H01M 4/66 (2006.01); H01M 4/75 (2006.01); B82Y 30/00 (2011.01); H01M 10/056 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/0416 (2013.01); H01M 4/364 (2013.01); H01M 4/525 (2013.01); H01M 4/5825 (2013.01); H01M 4/623 (2013.01); H01M 4/661 (2013.01); H01M 4/663 (2013.01); H01M 4/75 (2013.01); B82Y 30/00 (2013.01); H01M 10/056 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0037 (2013.01);
Abstract

A method of preparing a slurry composition for a secondary battery positive electrode includes preparing a positive electrode active material pre-dispersion by mixing a lithium iron phosphate-based positive electrode active material, a dispersant, and a solvent, and preparing a slurry for a positive electrode by further mixing a conductive agent, a binder, and an additional solvent with the positive electrode active material pre-dispersion is provided. A positive electrode for a secondary battery which is prepared by using the same method, and a lithium secondary battery including the positive electrode are also provided.

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