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. 14, 2021
Filed:
Apr. 11, 2019
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Koji Torita, Nagoya, JP;
Akihiro Ochiai, Toyonaka, JP;
Yusuke Fukumoto, Toyonaka, JP;
Harunari Shimamura, Toyonaka, JP;
Takuya Asari, Osaka, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A positive electrode includes at least a positive electrode current collector and a positive electrode active material layer. The positive electrode current collector includes an aluminum foil and an aluminum hydrated oxide film. The aluminum hydrated oxide film covers a surface of the aluminum foil. The positive electrode active material layer is formed on a surface of the aluminum hydrated oxide film. The aluminum hydrated oxide film has a thickness not smaller than 50 nm and not greater than 1000 nm. The aluminum hydrated oxide film contains at least one selected from the group consisting of phosphorus, fluorine, and sulfur.