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.:
Date of Patent:
Dec. 30, 2025
Filed:
Aug. 01, 2023
Applicant:
Umicore, Brussels, BE;
Inventors:
Takashi Shinpuku, Olen, BE;
Hiroshi Tani, Olen, BE;
Ralph Otterstedt, Olen, BE;
Keiichiro Kanao, Olen, BE;
Assignee:
UMICORE, Brussels, BE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/525 (2010.01); C01G 53/42 (2025.01); H01M 4/02 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 4/525 (2013.01); C01G 53/42 (2013.01); H01M 10/0525 (2013.01); C01P 2002/85 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01);
Abstract
A lithium metal composite oxide powder for use in a positive electrode active material for a lithium ion battery has a composition of LiNiCoAlO(wherein, a=0.8 to 1.2, b=0.7 to 0.95, c=0.02 to 0.2, d=0.005 to 0.1, and b+c+d=1). The powder has been treated with an aqueous solution of an organic metal salt and soluble aluminum salt and does not cause volume expansion due to gas generation. A positive electrode active material with the lithium metal composite oxide powder has a large discharge capacity, excellent cycle characteristics, and suppressed gas generation.