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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 10971720 B1

PDFFull Text
Date of Patent:
Apr. 06, 2021

Filed:

Apr. 16, 2018

Positive electrode active material, lithium ion secondary battery, and method of producing positive electrode active material

Applicants:

Toyota Jidosha Kabushiki Kaisha, Toyota, JP;

Sumitomo Metal Mining Co., Ltd., Tokyo, JP;

Inventors:

Ryuta Sugiura, Toyohashi, JP;

Satoshi Kanada, Niihama, JP;

Tetsutaro Hayashi, Niihama, JP;

Taira Aida, Niihama, JP;

Assignees:

Toyota Jidosha Kabushiki Kaisha, Toyota, JP;

Sumitomo Metal Mining Co., Ltd., Tokyo, JP;

Attorney:

Dinsmore & Shohl LLP

Primary Examiner:

Christopher P Domone

Assistant Examiner:

Kimberly Wyluda

Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 10/0525 (2010.01); H01M 4/525 (2010.01); H01M 4/505 (2010.01); H01M 4/62 (2006.01); C01G 53/00 (2006.01); C01G 51/00 (2006.01); C01G 45/12 (2006.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/364 (2013.01); C01G 45/1221 (2013.01); C01G 51/42 (2013.01); C01G 51/56 (2013.01); C01G 51/70 (2013.01); C01G 53/006 (2013.01); C01G 53/50 (2013.01); C01G 53/56 (2013.01); C01G 53/66 (2013.01); C01G 53/68 (2013.01); C01G 53/70 (2013.01); H01M 4/366 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/624 (2013.01); H01M 10/0525 (2013.01); C01P 2002/34 (2013.01); C01P 2004/84 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01);
Abstract

A positive electrode active material includes secondary particles. The secondary particles include a plurality of primary particles. The primary particles include a lithium-containing composite metal oxide. Inside the secondary particles, an electron conducting oxide is disposed at at least a part of a grain boundary between the primary particles. The electron conducting oxide has a perovskite structure.

Find Patent Forward Citations

Sugiura, Ryuta. (2021). Positive electrode active material, lithium ion secondary battery, and method of producing positive electrode active material (U.S. Patent No. 10971720). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10971720

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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