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. 22, 2021
Filed:
May. 19, 2017
Applicant:
Panasonic Corporation, Kadoma, JP;
Inventor:
Hidekazu Hiratsuka, Osaka, JP;
Assignee:
PANASONIC CORPORATION, Kadoma, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/02 (2006.01); H01M 4/13 (2010.01); H01M 4/131 (2010.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/13 (2013.01); H01M 4/131 (2013.01); H01M 10/052 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01);
Abstract
A positive electrode for a nonaqueous electrolyte secondary battery includes a positive electrode current collector and a positive electrode mixture layer which contains a positive electrode active material and is disposed on the positive electrode current collector. The void ratio of the positive electrode mixture layer is 30% or less, and the void ratio of secondary particles of the positive electrode active material is within a range of 30% or more and 70% or less of the void ratio of the positive electrode mixture layer.