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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 11424437 B1

PDFFull Text
Date of Patent:
Aug. 23, 2022

Filed:

Jul. 09, 2019

Negative electrode, non-aqueous electrolyte secondary battery, and method of producing negative electrode

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota, JP;

Inventors:

Ryosuke Ohsawa, Okazaki, JP;

Akira Tsujiko, Miyoshi, JP;

Kaoru Inoue, Hirakata, JP;

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;

Attorney:

Oliff PLC

Primary Examiner:

Ula C Ruddock

Assistant Examiner:

Mary Grace Byram

Int. Cl.
CPC ...
H01M 4/131 (2010.01); H01M 50/538 (2021.01); H01M 4/134 (2010.01); H01M 4/04 (2006.01); H01M 10/0525 (2010.01); H01M 4/36 (2006.01); H01M 4/62 (2006.01); H01M 4/485 (2010.01); H01M 10/052 (2010.01); H01M 4/1391 (2010.01); H01M 4/48 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/131 (2013.01); H01M 4/0459 (2013.01); H01M 4/134 (2013.01); H01M 4/1391 (2013.01); H01M 4/364 (2013.01); H01M 4/483 (2013.01); H01M 4/485 (2013.01); H01M 4/628 (2013.01); H01M 10/052 (2013.01); H01M 10/0525 (2013.01); H01M 50/538 (2021.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01);
Abstract

A negative electrode for a non-aqueous electrolyte secondary battery is provided. The negative electrode includes at least a negative electrode active material. The negative electrode active material includes a first type of silicon oxide particles and a second type of silicon oxide particles. The first type of silicon oxide particles has not been pre-doped with lithium. The second type of silicon oxide particles has been pre-doped with lithium. The first type of silicon oxide particles has a first average particle size. The second type of silicon oxide particles has a second average particle size. The ratio of the second average particle size to the first average particle size is not lower than 1.5 and not higher than 11.2.

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