公开(公告)号：US20210366665A1

公开(公告)日：2021-11-25

申请号：US17051949

申请日：2019-04-26

Applicant: JTEKT CORPORATION

Inventor： Yukihiro KOMATSUBARA ,  Takumi MIO ,  Kentaro IIZUKA ,  Takafumi FUJII ,  Koji NISHI ,  Naoki OHMI ,  Yusuke KIMOTO

IPC: H01G11/38 ,  H01G11/06 ,  H01G11/50 ,  H01G11/62

Abstract: An alkali metal ion capacitor that is capable of operating in a high-temperature environment at 85° C. The alkali metal ion capacitor is provided with: a positive electrode active material capable of adsorbing and desorbing alkali metal ions; a positive electrode binder for binding the positive electrode active material; a negative electrode active material capable of storing and releasing alkali metal ions; a negative electrode binder for binding the negative electrode active material; and an electrolytic solution that contains an organic solvent and an imide-based alkali metal salt. The negative electrode active material is predoped with alkali metal ions. The positive electrode binder has a Hansen solubility parameter-based RED value of more than 1 with respect to the electrolytic solution.

公开(公告)号：US20210234190A1

公开(公告)日：2021-07-29

申请号：US17051968

申请日：2019-04-26

Applicant: JTEKT CORPORATION

Inventor： Yukihiro KOMATSUBARA ,  Takumi MIO ,  Kentaro IIZUKA ,  Takafumi FUJII ,  Koji NISHI ,  Naoki OHMI ,  Yusuke KIMOTO

IPC: H01M10/0525 ,  H01M10/0568 ,  H01M4/62 ,  H01M4/66 ,  H01M4/36 ,  H01M4/58 ,  H01M10/0569 ,  H01M4/04 ,  H01M4/02

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.