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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 11728481 B1

PDFFull Text
Date of Patent:
Aug. 15, 2023

Filed:

Dec. 10, 2021

Method of producing positive electrode active material for nonaqueous electrolyte secondary battery

Applicant:

Nichia Corporation, Anan, JP;

Inventors:

Kenichi Kobayashi, Tokushima, JP;

Yukiko Sano, Anan, JP;

Assignee:

NICHIA CORPORATION, Anan, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Peter F Godenschwager

Int. Cl.
CPC ...
H01M 4/505 (2010.01); C01G 53/00 (2006.01); H01M 4/131 (2010.01); H01M 4/1391 (2010.01); H01M 4/485 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/505 (2013.01); C01G 53/006 (2013.01); C01G 53/40 (2013.01); C01G 53/42 (2013.01); C01G 53/50 (2013.01); H01M 4/131 (2013.01); H01M 4/1391 (2013.01); H01M 4/485 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); C01P 2004/03 (2013.01); C01P 2004/51 (2013.01); C01P 2004/61 (2013.01); C01P 2006/40 (2013.01); H01M 10/052 (2013.01);
Abstract

A method of producing a positive electrode active material for a nonaqueous electrolyte secondary battery, the method includes preparing nickel-containing composite oxide particles having a ratioD/Dof a 90% particle sizeDto a 10% particle sizeDin volume-based cumulative particle size distribution is 3 or less; mixing the composite oxide particles and a lithium compound to obtain a first mixture; subjecting the first mixture to a first heat treatment at a first temperature and a second heat treatment at a second temperature higher than the first temperature to obtain a first heat-treated product; and subjecting the first heat-treated material to a dispersion treatment.

Find Patent Forward Citations

Kobayashi, Kenichi. (2023). Method of producing positive electrode active material for nonaqueous electrolyte secondary battery (U.S. Patent No. 11728481). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11728481

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

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