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.

Date of Patent:
Aug. 11, 2026

Filed:

Oct. 29, 2021
Applicant:

Samsung Sdi Co., Ltd., Yongin-si, KR;

Inventors:

Jungsue Jang, Yongin-si, KR;

Jayhyok Song, Yongin-si, KR;

Dongwook Shin, Yongin-si, KR;

Jaeha Shim, Yongin-si, KR;

Assignee:

Samsung SDI Co., Ltd., Yongin-si, KR;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/36 (2006.01); C01G 53/42 (2025.01); H01M 4/02 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 4/364 (2013.01); C01G 53/42 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); C01P 2002/54 (2013.01); C01P 2002/90 (2013.01); C01P 2004/50 (2013.01); C01P 2004/61 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01); H01M 10/0525 (2013.01); H01M 2220/20 (2013.01);
Abstract

A nickel-based lithium metal composite oxide including secondary particles including aggregates of primary particles. The secondary particles include i) large secondary particles having a particle size of at least about 14 μm and including aluminum and ii) small secondary particles having a particle size of no more than about 5 μm and including manganese, and a manganese content by mole percent of each of the large secondary particles is smaller than a manganese content by mole percent of each of the small secondary particles and manganese is included on a surface of each of the large secondary particles and aluminum is included on a surface of each of the small secondary particles.


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