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:
Sep. 15, 2020
Filed:
Nov. 05, 2018
Toyota Jidosha Kabushiki Kaisha, Toyota-shi Aichi-ken, JP;
Natsumi Hiramoto, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
According to the present disclosure, the nonaqueous secondary battery includes: an electrode body including a positive electrode, a negative electrode, and a separator; and a nonaqueous electrolyte. At least one electrode of the positive electrode and the negative electrode and the separator satisfy any of conditions below: (1) the electrode and the separator are in contact with each other; (2) the separator has an O/C ratio of 0.1 or more and 0.2 or less; (3) the separator has a surface roughness Ra of 0.05 μm or more and 0.3 μm or less; and (4) a ratio of the surface roughness Ra of the separator to the surface roughness Ra of the electrode is 0.1 or more and 0.5 or less.