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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 11557762 B1

PDFFull Text
Date of Patent:
Jan. 17, 2023

Filed:

Oct. 11, 2019

Lithium composite metal oxide, positive electrode active material for lithium secondary batteries, positive electrode for lithium secondary batteries, and lithium secondary battery

Applicant:

Sumitomo Chemical Company, Limited, Tokyo, JP;

Inventor:

Daisuke Nagao, Niihama, JP;

Assignee:

SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;

Attorney:

McDermott Will & Emery LLP

Primary Examiner:

Hoa (Holly) Le

Int. Cl.
CPC ...
C01G 51/00 (2006.01); C01G 53/00 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/505 (2013.01); C01G 53/50 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); C01P 2002/50 (2013.01); C01P 2002/72 (2013.01); C01P 2004/51 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01);
Abstract

The present invention relates to a lithium composite metal oxide which satisfies the requirements (1) and (2) described below. Requirement (1): The ratio of the half width A of the diffraction peak within the range of 2θ=64.5±1° to the half width B of the diffraction peak within the range of 2θ=44.4±1°, namely A/B is from 1.39 to 1.75 (inclusive) in powder X-ray diffractometry using a Cu—Kα ray. Requirement (2): The ratio of the volume-based 90% cumulative particle size (D) to the volume-based 10% cumulative particle size (D), namely D/Dis 3 or more.

Find Patent Forward Citations

Nagao, Daisuke. (2023). Lithium composite metal oxide, positive electrode active material for lithium secondary batteries, positive electrode for lithium secondary batteries, and lithium secondary battery (U.S. Patent No. 11557762). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11557762

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

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