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:
Aug. 11, 2020
Filed:
Jan. 25, 2019
Applicant:
Sanyo Electric Co., Ltd., Daito-shi, Osaka, JP;
Inventor:
Kazuya Hashimoto, Osaka, JP;
Assignee:
SANYO Electric Co., Ltd., Daito-shi, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/131 (2010.01); H01M 4/133 (2010.01); H01M 4/1393 (2010.01); H01M 4/04 (2006.01); H01M 10/0587 (2010.01); H01M 4/1391 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/364 (2013.01); H01M 4/043 (2013.01); H01M 4/131 (2013.01); H01M 4/133 (2013.01); H01M 4/1391 (2013.01); H01M 4/1393 (2013.01); H01M 10/0587 (2013.01); H01M 2004/021 (2013.01);
Abstract
A method for producing a positive electrode for a nonaqueous electrolyte secondary battery includes forming a positive electrode mixture layer on a positive electrode core, the positive electrode mixture layer containing hollow positive electrode active material particles having a BET specific surface area X of 1.5 m/g or more; and compressing the positive electrode mixture layer. The ratio of the BET specific surface area Y of the positive electrode active material particles after the compression to the BET specific surface area X (Y/X) is between 1.05 and 1.35.