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:
Jun. 16, 2020
Filed:
Sep. 25, 2014
The University of Tokyo, Tokyo, JP;
Kabushiki Kaisha Toyota Jidoshokki, Kariya-shi, Aichi-ken, JP;
Atsuo Yamada, Tokyo, JP;
Yuki Yamada, Tokyo, JP;
Kohei Mase, Kariya, JP;
Tomoyuki Kawai, Kariya, JP;
Yoshihiro Nakagaki, Kariya, JP;
Yuki Hasegawa, Kariya, JP;
Nobuhiro Goda, Kariya, JP;
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya-shi, JP;
THE UNIVERSITY OF TOKYO, Tokyo, JP;
Abstract
To provide a nonaqueous electrolyte secondary battery that suppresses elution of Al from a positive electrode current collector formed of aluminum or an aluminum alloy, and is superior in thermal characteristics and input-output characteristics. Provided is a nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode has a positive electrode current collector formed of aluminum or an aluminum alloy. The electrolytic solution contains a metal salt and an organic solvent having a heteroelement. Regarding an intensity of a peak derived from the organic solvent in a vibrational spectroscopy spectrum of the electrolytic solution, Is>Io is satisfied when an intensity of an original peak of the organic solvent is represented as Io and an intensity of a peak resulting from shifting of the original peak is represented as Is.