New two-dimensional quantum magnets by creating superoxyhalides

2020 Fiscal Year Final Research Report

• Project/Area Number: 19K22056
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 26:Materials engineering and related fields
• Research Institution: Kyoto University
• Principal Investigator: Kitada Atsushi 京都大学, 工学研究科, 助教 (30636254)
• Project Period (FY): 2019-06-28 – 2021-03-31
• Keywords: 電解液材料 / 超酸化物 / ポリエーテル

Outline of Final Research Achievements

New material synthesis by low-temperature mixing under anaerobic condition has been studied. Equimolar potassium superoxide (KO2), metal halides, and polyether solvents were mixed. However, solvents and KO2 seems decomposed even at room temperature. Solventless reactions seem to work, which we will continue studying after ending this funding.
From our findings mentioned above, polyether-based concentrated electrolyte solutions were examined without using KO2. Our achievements are as follows: (I)We realized flat aluminum electrodeposition with good corrosion resistance and hardness. (II)We synthesized new materials named protic solvate ionic liquids and found the expression conditions of fast proton conduction. (III)We noticed expression of lithium ion hopping, as the first example for short-chain polyether system.

Free Research Field

無機材料科学

Academic Significance and Societal Importance of the Research Achievements

超酸化物という耳慣れない物質についての理解を深めた。特にポリエーテル溶媒との反応性についての知見が得られた。ポリエーテル溶媒を用いるイオン性溶液についての理解も深まった。結果として本研究は当初予期していなかった展開を見せた。具体的な成果として、室温アルミニウムめっき液、高速プロトン伝導体、高速リチウムイオン伝導体の３つの新材料の発見に至った。これらは次世代めっき材料や次世代エネルギー材料として期待される。