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:
Jun. 12, 2018
Filed:
Dec. 10, 2015
Applicant:
Panasonic Corporation, Osaka, JP;
Inventor:
Hidekazu Hiratsuka, Osaka, JP;
Assignee:
PANASONIC CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/525 (2010.01); C01G 53/00 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); C01G 53/42 (2013.01); C01G 53/50 (2013.01); H01M 4/525 (2013.01); C01P 2002/60 (2013.01); C01P 2004/50 (2013.01); C01P 2004/61 (2013.01); C01P 2004/84 (2013.01); C01P 2006/40 (2013.01); H01M 10/052 (2013.01);
Abstract
A positive electrode active material for a nonaqueous electrolyte secondary battery contains a lithium composite oxide particle as a main component, in which a ratio of Ni to a total number of moles of all metal elements other than Li is greater than 30 mol %. The lithium composite oxide particle includes a secondary particle being aggregation of primary particles having an average particle diameter of 1 μm or more, and a shell constituted around the secondary particle. A surface layer void is present between the secondary particle and the shell.