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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 10938025 B1

PDFFull Text
Date of Patent:
Mar. 02, 2021

Filed:

Apr. 23, 2018

Negative electrode active material particles for lithium ion secondary battery and method of producing the same

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota, JP;

Inventors:

Kazuhisa Takeda, Toyota, JP;

Keisuke Ohara, Nagoya, JP;

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Cynthia H Kelly

Assistant Examiner:

Monique M Wills

Int. Cl.
CPC ...
H01M 4/00 (2006.01); H01M 4/36 (2006.01); H01M 4/587 (2010.01); H01M 4/485 (2010.01); C01G 23/00 (2006.01); C01B 32/05 (2017.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); C01B 32/05 (2017.08); C01G 23/005 (2013.01); H01M 4/485 (2013.01); H01M 4/587 (2013.01); H01M 4/625 (2013.01); C01P 2004/61 (2013.01); C01P 2004/80 (2013.01); C01P 2006/40 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01);
Abstract

Negative electrode active material particles for a lithium ion secondary battery include base material particles and a coating. The coating covers a surface of the base material particles. The base material particles contain a first carbon material. The coating contains lithium titanate and a second carbon material. When a ratio of an intensity of a D band to an intensity of a G band in a laser Raman spectrum is set as an R value, the second carbon material has a larger R value than the first carbon material.

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Takeda, Kazuhisa. (2021). Negative electrode active material particles for lithium ion secondary battery and method of producing the same (U.S. Patent No. 10938025). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10938025

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