公开(公告)号：US11227726B2

公开(公告)日：2022-01-18

申请号：US16479783

申请日：2018-01-19

Applicant: Tokyo University of Science Foundation

Inventor： Shinichi Komaba ,  Kei Kubota ,  Tomooki Hosaka

IPC: H01G11/06 ,  H01M10/054 ,  H01M10/0569 ,  H01G11/60 ,  H01G11/32

Abstract: An electrolyte solution for a potassium ion battery or a potassium ion capacitor, the electrolyte solution comprising at least one potassium salt compound selected from the group consisting of potassium bis(trifluoromethanesulfonyl)amide and potassium bis(fluorosulfonyl)amide and at least one solvent selected from the group consisting of ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, pentaethylene glycol dimethyl ether, ethylene carbonate, and propylene carbonate, in which a concentration of the potassium salt compound in the electrolyte solution is from 1.5 mol/kg to 12.0 mol/kg.

公开(公告)号：US11145863B2

公开(公告)日：2021-10-12

申请号：US16463789

申请日：2017-11-20

Applicant: Tokyo University of Science Foundation

Inventor： Shinichi Komaba ,  Kei Kubota ,  Kuniko Chihara ,  Akihiro Katogi

IPC: H01M4/58 ,  C01G31/00 ,  H01M10/054 ,  C01B25/455 ,  C01B25/45 ,  H01M4/02

Abstract: Provided is the positive electrode active material for a potassium ion battery according to the embodiment comprises a compound represented by Formula (1), in which M represents at least one element selected from the group consisting of V, Fe, Co, Ni, and Mn, and x represents a number from 0 to 1; and is a positive electrode for a potassium ion battery comprising the positive electrode active material for a potassium ion battery according to the embodiment, or a potassium ion battery comprising the positive electrode for a potassium ion battery. KMOxPO4F1-x  [Formula (1)].

公开(公告)号：US10454108B2

公开(公告)日：2019-10-22

申请号：US15575462

申请日：2016-05-20

Applicant: Umicore ,  Tokyo University of Science Foundation

Inventor： Shinichi Kumakura ,  Shinichi Komaba ,  Kei Kubota ,  Yoshiyuki Tahara

IPC: H01B1/06 ,  H01M4/525 ,  H01M4/505 ,  C01G45/12 ,  C01G53/00 ,  H01M10/054 ,  H01M10/058 ,  H01M4/02

Abstract: A sodium transition metal based cathode material for a rechargeable sodium battery, having a P2 orthorhombic layered bronze crystal structure with space group Cmcm, and having a composition NaxMyMn1-yLiy′AzO2 with 0.60 0.

公开(公告)号：US20210358695A1

公开(公告)日：2021-11-18

申请号：US16479783

申请日：2018-01-19

Applicant: Tokyo University of Science Foundation

Inventor： Shinichi Komaba ,  Kei Kubota ,  Tomooki Hosaka

IPC: H01G11/06 ,  H01M10/054 ,  H01G11/32 ,  H01G11/60 ,  H01M10/0569

Abstract: An electrolyte solution for a potassium ion battery or a potassium ion capacitor, the electrolyte solution comprising at least one potassium salt compound selected from the group consisting of potassium bis(trifluoromethanesulfonyl)amide and potassium bis(fluorosulfonyl)amide and at least one solvent selected from the group consisting of ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, pentaethylene glycol dimethyl ether, ethylene carbonate, and propylene carbonate, in which a concentration of the potassium salt compound in the electrolyte solution is from 1.5 mol/kg to 12.0 mol/kg.

公开(公告)号：US10593992B2

公开(公告)日：2020-03-17

申请号：US15518104

申请日：2015-09-03

Applicant: TOKYO UNIVERSITY OF SCIENCE FOUNDATION

Inventor： Shinichi Komaba ,  Kei Kubota ,  Mouad Dahbi ,  Tatsuya Hasegawa

IPC: H01M10/054 ,  H01M4/62 ,  H01M4/587 ,  H01G11/32 ,  H01G11/38 ,  H01M4/133 ,  H01G11/30 ,  H01G11/68 ,  H01M4/66 ,  H01M4/02

Abstract: Provided are: a potassium ion secondary battery which is not susceptible to deterioration of charge/discharge capacity even if charging and discharging are repeated, and which has a long service life as a secondary battery; a potassium ion capacitor; a negative electrode for the potassium ion secondary battery; and a negative electrode for the potassium ion capacitor. A negative electrode for potassium ion secondary batteries and a negative electrode for potassium ion capacitors, each of which contains a carbon material that is capable of absorbing and desorbing potassium and a binder that contains a polycarboxylic acid and/or a salt thereof. A potassium ion secondary battery which is provided with the negative electrode or the capacitor. A binder for negative electrodes of potassium ion secondary batteries or negative electrodes of potassium ion capacitors, which contains a polycarboxylic acid and/or a salt thereof.