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:
Jan. 21, 2020
Filed:
Jun. 11, 2018
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Hideki Hagiwara, Nagoya, JP;
Koji Takahata, Nisshin, JP;
Masaki Kato, Toyota, JP;
Akira Saito, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Abstract
Provided is a nonaqueous electrolyte secondary battery in which LiPOis added to a positive electrode active material layer and the increase of battery temperature when the voltage rises is suppressed. The nonaqueous electrolyte secondary battery disclosed herein includes a positive electrode, a negative electrode, and a nonaqueous electrolytic solution. The positive electrode has a positive electrode active material layer. The positive electrode active material layer includes a positive electrode active material, LiPO, and acetic anhydride. The content of LiPOin the positive electrode active material layer is 1% by mass or more and 15% by mass or less. The content of acetic anhydride in the positive electrode active material layer is 0.02% by mass or more and 0.2% by mass or less.