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:
Jul. 23, 2024
Filed:
Apr. 26, 2019
Jtekt Corporation, Osaka, JP;
Yukihiro Komatsubara, Osaka, JP;
Takumi Mio, Osaka, JP;
Kentaro Iizuka, Osaka, JP;
Takafumi Fujii, Osaka, JP;
Koji Nishi, Osaka, JP;
Naoki Ohmi, Osaka, JP;
Yusuke Kimoto, Osaka, JP;
JTEKT CORPORATION, Kariya, JP;
Abstract
A lithium ion secondary battery that can operate in a high-temperature environment of 85° C. The lithium ion secondary battery includes a positive electrode active material that can store and release lithium ions Li', a positive electrode binder that binds the positive electrode active material, a negative electrode active material that can store and release lithium ions Li, a negative electrode binder that binds the negative electrode active material, and an electrolytic solution containing an organic solvent and an imide-based lithium salt. The negative electrode active material is previously doped with lithium ions. The positive electrode binder has a Hansen solubility parameter-based relative energy difference (RED) value of more than 1 with respect to the electrolytic solution.