Ethyl-dimethyl-(ferrocenylmethyl)ammonium-based ionic liquid: Structure, transport, and electrochemical properties of binary solutions in acetonitrile

IF 2.4 4区化学 Q3 CHEMISTRY, PHYSICAL Ionics Pub Date : 2024-10-02 DOI:10.1007/s11581-024-05855-0

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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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.

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来源期刊

Ionics 化学-电化学

CiteScore

5.30

自引率

7.10%

发文量

427

审稿时长

2.2 months

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.