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:
Mar. 22, 2022
Filed:
Feb. 01, 2018
Applicant:
Panasonic Corporation, Kadoma, JP;
Inventor:
Hidekazu Hiratsuka, Osaka, JP;
Assignee:
PANASONIC CORPORATION, Kadoma, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/131 (2010.01); C01G 53/04 (2006.01); H01M 4/1391 (2010.01); H01M 4/485 (2010.01); 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 4/131 (2013.01); C01G 53/04 (2013.01); H01M 4/1391 (2013.01); H01M 4/485 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01);
Abstract
A positive electrode active material for nonaqueous electrolyte secondary batteries includes secondary particles of lithium transition metal oxide including aggregates of primary particles of the oxide. The primary particles have an average particle size of not less than 1 μm, and the secondary particles have a void content of more than 30%.