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Title:
ELECTROLYTE SOLUTION FOR POTASSIUM ION BATTERIES, POTASSIUM ION BATTERY, ELECTROLYTE SOLUTION FOR POTASSIUM ION CAPACITORS, AND POTASSIUM ION CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2018/135627
Kind Code:
A1
Abstract:
Provided are: an electrolyte solution for potassium ion batteries or capacitors, which enables the achievement of a potassium ion battery or capacitor having excellent passive state formability; and a potassium ion battery or capacitor, which is provided with this electrolyte solution. An electrolyte solution for potassium ion batteries or capacitors, which contains 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, and wherein the concentration of the potassium salt compound is from 1.5 mol/kg to 12.0 mol/kg (inclusive).

Inventors:
KOMABA SHINICHI (JP)
KUBOTA KEI (JP)
HOSAKA TOMOOKI (JP)
Application Number:
JP2018/001621
Publication Date:
July 26, 2018
Filing Date:
January 19, 2018
Export Citation:
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Assignee:
UNIV TOKYO SCIENCE FOUND (JP)
International Classes:
H01M10/0568; H01G11/06; H01G11/60; H01G11/62; H01M10/054; H01M10/0569
Domestic Patent References:
WO2016059907A12016-04-21
WO2013146714A12013-10-03
WO2014200012A12014-12-18
Foreign References:
JP2015079636A2015-04-23
Other References:
WANG, JIANHUI ET AL.: "Superconcentrated electrolytes for a high-voltage lithium-ion battery", NATURE COMMUNICATIONS, vol. 7, 29 June 2016 (2016-06-29), pages 12032, XP055505812
HOSAKA, TOMOOKI ET AL.: "Solvent dependence of withstand voltage behavior in high concentration electrolyte for 3D02 potassium ion battery", 58TH BATTERY SYMPOSIUM IN JAPAN, 13 November 2017 (2017-11-13), pages 249
Attorney, Agent or Firm:
NAKAJIMA, Jun et al. (JP)
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