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:
Oct. 23, 2018
Filed:
Jul. 15, 2016
Applicant:
Panasonic Corporation, Osaka, JP;
Inventor:
Hidekazu Hiratsuka, Osaka, JP;
Assignee:
PANASONIC CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/525 (2010.01); H01M 4/38 (2006.01); H01M 2/16 (2006.01); H01M 4/134 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/131 (2010.01); H01M 4/505 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/38 (2013.01); H01M 2/1673 (2013.01); H01M 4/131 (2013.01); H01M 4/134 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/624 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01);
Abstract
A positive electrode active material for use in nonaqueous electrolyte secondary batteries. The active material is composed of particles each formed by the gathering of grains that comprises at least one metal element selected from the group consisting of Ta and Nb. One of the particles has a compression fracture strength of 500 MPa or more. The grain diameter in the (110) vector direction of the particles is 100 nm to 300 nm.