Studies on Metal Complexes as Active Materials in Redox-flow Battery Using Ionic Liquids as Electrolyte: Cyclic Voltammetry of Betainium Bis(Trifluoromethylsulfonyl)Imide Solution Dissolving Na[Fe-III(edta)(H2O)] as an Anode Active Material

作者：Teramoto Kazunori; Nishide Toshikazu; Ikeda Yasuhisa^*

来源：Electrochemistry, 2015, 83(9): 730-732.

DOI：10.5796/electrochemistry.83.730

• Redox-flow Battery
• Ionic Liquid
• Iron(III) Complex
• Cyclic Voltammetry

As a part of studies for finding metal complexes as an active material in the redox-flow battery system using ionic liquids (ILs) as an electrolyte, we have measured cyclic voltammograms (CVs) of betainium bis(trifluoromethylsulfonyl)imide ([Hbet][Tf2N]) (H2O content: 11 wt%) dissolving Na[Fe-III(edta)(H2O)] (edta = ethylenediamine-N,N,N',N'-tetraacetate). Two peaks corresponding to one redox couple were observed around 50 and 220 mV vs. Ag/AgCl and assigned as a quasi-reversible redox reaction based on electrochemical data. Furthermore, the CVs were found to be cycled stably. From these results, the Na[Fe-III(edta)(H2O)] is expected to be used as anode active material for the redox-flow batteries using [Hbet][Tf2N] containing 11 wt% H2O as the electrolyte.

• 出版日期2015-9