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:
Jul. 08, 2025
Filed:
Mar. 18, 2022
Applicant:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Inventors:
Ichiro Arise, Osaka, JP;
Saki Morizane, Niihama, JP;
Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 50/417 (2021.01); H01M 4/02 (2006.01); H01M 4/133 (2010.01); H01M 50/423 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01);
U.S. Cl.
CPC ...
H01M 50/417 (2021.01); H01M 4/133 (2013.01); H01M 50/423 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); H01M 2004/027 (2013.01);
Abstract
A nonaqueous electrolyte secondary battery laminate is provided which has a short circuit prevention effect improved by controlling the shape of a dendrite. The nonaqueous electrolyte secondary battery laminate in accordance with an aspect of the disclosure includes a separator and a graphite negative electrode. The graphite negative electrode has a non-reactivity parameter of not less than 230%. The separator has a surface that faces the graphite negative electrode and has an average void volume, obtained by analyzing a microscopic image of the surface, of not more than 0.015 μm.