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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 10663528 B1

PDFFull Text
Date of Patent:
May. 26, 2020

Filed:

Oct. 07, 2016

Method of measuring distribution of binder in electrode

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Taek Soo Lee, Daejeon, KR;

Jung Woo Yoo, Daejeon, KR;

Je Young Kim, Daejeon, KR;

Assignee:

LG Chem, Ltd., , KR;

Attorney:

Lerner, David, Littenberg, Krumholz & Mentlik, LLP

Primary Examiner:

Son T Le

Assistant Examiner:

Adam S Clarke

Int. Cl.
CPC ...
G01R 31/36 (2020.01); G01R 31/385 (2019.01); H01M 4/139 (2010.01); H01M 4/62 (2006.01); H01M 10/42 (2006.01); H01M 4/04 (2006.01); H01M 10/48 (2006.01); H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/058 (2010.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
G01R 31/3865 (2019.01); H01M 4/04 (2013.01); H01M 4/139 (2013.01); H01M 4/364 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/621 (2013.01); H01M 4/623 (2013.01); H01M 4/625 (2013.01); H01M 10/4285 (2013.01); H01M 10/48 (2013.01); H01M 10/058 (2013.01); H01M 10/0525 (2013.01);
Abstract

A method of the present invention includes measuring a thickness of an electrode in which an active material layer is formed on a current collector (Step 1); fixing the active material layer of the electrode to a substrate (Step 2); attaching a removal tape to the current collector of the electrode, and then measuring an adhesive strength of the removal tape and measuring a thickness of the electrode after the removal (Step 3); attaching a removal tape to the active material layer from which the current collector is removed, and then measuring an adhesive strength of the removal tape and measuring the thickness of the electrode after the removal, wherein this procedure is repeated until a measurement limit is reached (Step 4); and determining a distribution of a binder according to the thickness of the electrode from measured values obtained in Steps 3 and 4 (Step 5).

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