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ELECTROLYTE SOLUTION FOR POTASSIUM ION BATTERIES, POTASSIUM ION BATTERY, ELECTROLYTE SOLUTION FOR POTASSIUM ION CAPACITORS, AND POTASSIUM ION CAPACITOR NEW

外国特許コード F180009518
整理番号 (S2017-0293-N0)
掲載日 2018年11月2日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2018JP001621
国際公開番号 WO 2018135627
国際出願日 平成30年1月19日(2018.1.19)
国際公開日 平成30年7月26日(2018.7.26)
優先権データ
  • 特願2017-009526 (2017.1.23) JP
発明の名称 (英語) ELECTROLYTE SOLUTION FOR POTASSIUM ION BATTERIES, POTASSIUM ION BATTERY, ELECTROLYTE SOLUTION FOR POTASSIUM ION CAPACITORS, AND POTASSIUM ION CAPACITOR NEW
発明の概要(英語) 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).
従来技術、競合技術の概要(英語) BACKGROUND ART
Current, as a secondary battery of high energy density, and a nonaqueous electrolyte, a lithium-ion positive electrode and the negative electrode charge and discharge is moved between the non-aqueous electrolyte secondary battery and has been widely used.
In such a non-aqueous electrolyte secondary battery, generally lithium nickelate as a positive electrode (LiNiO 2), (LiCoO 2) such as lithium cobalt oxide having a layered structure of the lithium-transition metal composite oxide is used, as the negative electrode carbon material capable of occluding and releasing lithium, a lithium metal, lithium alloy or the like is used (for example, see Japanese Patent Application Laid-open 2003-151549).In addition, as the positive electrode of the nonaqueous electrolyte secondary battery, as described in the publication JP-2015-515081 is known.
A chargeable and dischargeable battery as the secondary battery, high energy density can be achieved at a high voltage lithium-ion secondary battery is mainly used so far is, lithium, and the relatively limited amount of resources, is expensive.In addition, localized resources and South America, Japan and imported from overseas total is dependent on.Therefore, the cost of the battery for stable supply, instead of the lithium ion secondary battery for the sodium ion secondary battery which is presently under development.However, larger than the atomic weight of lithium, a lithium standard electrode potential as high than 0.33V, the cell voltage is also decreased, and high energy density is difficult.Lithium-ion battery used as the electrolytic solution, International Publication No. 2013/146714 is described in Y.Yamada and A.Yamada, "Review-Superconcentrated Electrolytes for Lithium Batteries", Journal of The Electrochemical Society, 162, A2406-A2423 (2015) or which has been known.
In recent years, lithium ions and sodium ions and potassium ions instead of using the non-aqueous electrolyte secondary battery has been started.Potassium ion secondary battery constituting the electrode active material, particularly the positive electrode active material, and potassium ions to become source and is not used, a potassium compound containing potassium as a constituent element are required.At present, a potassium ion secondary battery as a positive electrode active material, for example, a crystal having a layered rock-salt type structure composed of K0.3MnO2 reference (Christoph Vaalma, et al., Journal of The Electrochemical Society, 163 (7), A1295-A1299 (2016) ) or Prussian blue (Ali Eftekhari, Journal of Power Souces, 126, 221-228 (2004) -crystal-based reference) and the like are known.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • TOKYO UNIVERSITY OF SCIENCE FOUNDATION
  • 発明者(英語)
  • Shinichi Komaba
  • Kei Kubota
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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