Zhang, Yonglai Ye, Ruijie Henkensmeier, Dirk Hempelmann, Rolf Chen, Ruiyong 2024-01-19T23:32:01Z 2024-01-19T23:32:01Z 2021-09-03 2018-02 0013-4686 https://pubs.kist.re.kr/handle/201004/121747 Several hydrophilic ionic liquids dissolved in water with different molalities are studied as "water-in-ionic liquid" supporting electrolytes. They exhibit wide electrochemical stability window from 3 to 4.4 V, high ionic conductivities and good flowability, making them promising supporting electrolytes for aqueous high-voltage rechargeable batteries. In such supporting electrolytes, enhanced redox activities of lithium insertion/ extraction in anodic TiO2 film at low negative potential and Fe3+/Fe2+ couple at moderate positive potential were observed. Cyclability of an aqueous TiO2/Fe2+ hybrid battery is demonstrated with a voltage of 1.7 V. (c) 2018 Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD "Water-in-ionic liquid" solutions towards wide electrochemical stability windows for aqueous rechargeable batteries Article 10.1016/j.electacta.2018.01.050 1 ELECTROCHIMICA ACTA, v.263, pp.47 - 52 ELECTROCHIMICA ACTA 263 47 52 N scie scopus 000424643900007 2-s2.0-85040310421 Electrochemistry Electrochemistry Article FLOW BATTERIES ANATASE TIO2 ELECTROLYTES BEHAVIOR DENSITY STORAGE ARRAYS LI "Water-in-ionic liquid" electrolytes Electrochemical stability windows Aqueous rechargeable batteries