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:
Apr. 19, 2022
Filed:
Mar. 09, 2020
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
Provided is a lithium ion secondary battery with enhanced charge-discharge characteristics. Disclosed is a lithium ion secondary battery comprising: a columnar anode comprising a carbon fiber assembly having an assembled carbon fiber structure, a cathode, and an ion-conducting, insulating separation film disposed between the cathode and the anode to insulate the cathode and the anode from each other, wherein a void content of the carbon fiber assembly is 20% or more and 40% or less, and wherein at least one of a lithium metal and a lithium alloy is contained in voids of the carbon fiber assembly, when the lithium ion secondary battery is in a fully charged state.