Ekaterina A. Arkhipova, Mikhail M. Levin, Anton S. Ivanov, Konstantin I. Maslakov, Konstantin A. Lyssenko, Alexander A. Leonov, Shufeng Song, Serguei V. Savilov
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引用次数: 0
Abstract
This work reports the synthesis and comprehensive physicochemical characterization of ethyl-dimethyl-(ferrocenylmethyl)ammonium bis(trifluoromethylsulfonyl)imide ([Fc1N112][NTf2]) ionic liquid—a promising electrolyte component of redox-flow batteries. The structure of [Fc1N112][NTf2] was analyzed by XRD, NMR, and XPS. The ionic conductivities of [Fc1N112][NTf2] solutions in acetonitrile were measured in the temperature range of 298–348 K and analyzed using the Casteel-Amis, Arrhenius, and Vogel-Fulcher-Tamman equations. The thermo-gravimetric analysis confirmed the high thermal stability of [Fc1N112][NTf2] up to 570 K. The densities of the [Fc1N112][NTf2] binary solutions were measured, and the coefficients of thermal expansion were calculated. Electrochemical stability of [Fc1N112][NTf2] was tested by cyclic voltammetry using [EMIm][NTf2] as a supporting electrolyte. A large electrochemical stability window of 5.38 V was detected.
期刊介绍:
Ionics is publishing original results in the fields of science and technology of ionic motion. This includes theoretical, experimental and practical work on electrolytes, electrode, ionic/electronic interfaces, ionic transport aspects of corrosion, galvanic cells, e.g. for thermodynamic and kinetic studies, batteries, fuel cells, sensors and electrochromics. Fast solid ionic conductors are presently providing new opportunities in view of several advantages, in addition to conventional liquid electrolytes.