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:
Nov. 17, 2020
Filed:
Oct. 24, 2016
Applicant:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Inventors:
Junji Suzuki, Niihama, JP;
Toshihiko Ogata, Osaka, JP;
Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); H01M 10/058 (2010.01); B32B 5/24 (2006.01); C08J 9/26 (2006.01); H01M 10/0525 (2010.01); H01G 11/52 (2013.01);
U.S. Cl.
CPC ...
H01M 2/16 (2013.01); B32B 5/24 (2013.01); C08J 9/26 (2013.01); H01G 11/52 (2013.01); H01M 2/1653 (2013.01); H01M 2/1686 (2013.01); H01M 10/058 (2013.01); H01M 10/0525 (2013.01); H01M 2/166 (2013.01);
Abstract
Provided are a separator capable of being used for a secondary battery such as a nonaqueous electrolyte-solution secondary battery and a secondary battery including the separator. A separator having a first layer including a porous polyethylene and an organic additive is provided. A white index of the first layer is equal to or more than 85 and equal to or less than 98, and a reduction rate of diethyl carbonate dropped on the first layer is equal to or higher than 0.048 mg/s and equal to or lower than 0.067 mg/s. The separator may further include a porous layer over the first layer.