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. 26, 2021
Filed:
Dec. 18, 2018
Applicant:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Inventors:
Ichiro Arise, Osaka, JP;
Toshihiko Ogata, Osaka, JP;
Kosuke Kurakane, Osaka, JP;
Junji Suzuki, Osaka, JP;
Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); H01M 50/449 (2021.01); H01M 4/583 (2010.01); H01M 4/48 (2010.01); H01M 10/0525 (2010.01); H01M 4/525 (2010.01); H01M 50/409 (2021.01); H01M 50/411 (2021.01); H01M 4/587 (2010.01);
U.S. Cl.
CPC ...
H01M 50/449 (2021.01); H01M 4/483 (2013.01); H01M 4/525 (2013.01); H01M 4/583 (2013.01); H01M 10/0525 (2013.01); H01M 50/409 (2021.01); H01M 50/411 (2021.01); H01M 4/587 (2013.01); H01M 2220/30 (2013.01);
Abstract
A nonaqueous electrolyte secondary battery includes: a separator including a polyolefin porous film; a porous layer containing a polyvinylidene fluoride-based resin; and a positive electrode plate and a negative electrode plate for each of which the result of a scratch test in the width direction and the result of a scratch test in the flow direction are each within a predetermined range, the polyvinylidene fluoride-based resin containing an α-form polyvinylidene fluoride-based resin in an amount of not less than 35.0 mol %.