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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 11735724 B1

PDFFull Text
Date of Patent:
Aug. 22, 2023

Filed:

Oct. 30, 2020

Silicon-containing negative electrodes, electrochemical cells, and methods of making the same

Applicant:

GM Global Technology Operations Llc, Detroit, MI (US);

Inventors:

Nicole Ellison, Madison Heights, MI (US);

Xiaosong Huang, Novi, MI (US);

Lei Wang, Rochester Hills, MI (US);

Xingyi Yang, Sterling Heights, MI (US);

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);

Attorney:

Harness, Dickey & Pierce, P.L.C.

Primary Examiner:

Ula C Ruddock

Int. Cl.
CPC ...
H01M 4/38 (2006.01); H01M 4/133 (2010.01); H01M 4/62 (2006.01); H01M 4/134 (2010.01); H01M 4/131 (2010.01); H01M 4/525 (2010.01); H01M 4/36 (2006.01); H01M 4/1395 (2010.01); H01M 4/1393 (2010.01); H01M 4/1391 (2010.01); H01M 4/04 (2006.01); H01M 4/505 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/386 (2013.01); H01M 4/0471 (2013.01); H01M 4/131 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/1391 (2013.01); H01M 4/1393 (2013.01); H01M 4/1395 (2013.01); H01M 4/364 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/622 (2013.01); H01M 2004/027 (2013.01);
Abstract

A negative electrode is provided herein as well as methods for preparing negative electrodes and electrochemical cells including the negative electrode. The negative electrode includes a first electroactive material, an electrically conductive material, and a polymeric binder. The first electroactive material includes silicon-containing particles having an average particle diameter of at least about 1 μm, and the electrically conductive material includes graphene nanoplatelets. The polymeric binder includes a polyimide, a polyamide, polyacrylonitrile, polyacrylic acid, a salt of polyacrylic acid, polyacrylamide, polyvinyl alcohol, carboxymethyl cellulose, or a combination thereof.

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