Study of tetraethylammonium bis(trifluoromethylsulfonyl)imide as a supporting electrolyte for an all-organic redox flow battery using Benzophenone and 1,4-di-tert-butyl-2,5-dimethoxybenzene as active species
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2018-07-01
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Language
en
Pages
8
6676-6683
6676-6683
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International Journal of Electrochemical Science, Volume 13, issue 7
Abstract
An ionic liquid tetraethylammonium bis(trifluoromethylsulfonyl)imide (TEATFSI) is synthesized as the supporting electrolyte in an all-organic redox flow battery system with acetonitrile as the solvent. Benzophenone (BP) and 1,4-di-tert-butyl-2,5-dimethoxybenzene (DBB) are used as the redox active species. The battery exhibits a high open voltage of 2.95 V. The electrode reactions are controlled by diffusion, which is significantly influenced by the cations of the supporting electrolytes. With TEATFSI as the supporting electrolyte, the diffusion coefficients are 1.21-1.43×10-5 cm2 s-1 and 0.89-1.16×10-5 cm2 s-1 at anode and cathode, respectively. The coulombic, voltage and energy efficiencies of the battery are 97%, 46% and 44%, respectively. The battery shows a stable performance during 50 charge-discharge cycles.Description
Keywords
All organic redox flow battery, Energy storage, Ionic liquid, Supporting electrolyte, Tetraethylammonium bis(trifluoromethylsulfonyl)imide
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Citation
Wang, X, Xing, X, Huo, Y, Zhao, Y, Li, Y & Chen, H 2018, ' Study of tetraethylammonium bis(trifluoromethylsulfonyl)imide as a supporting electrolyte for an all-organic redox flow battery using Benzophenone and 1,4-di-tert-butyl-2,5-dimethoxybenzene as active species ', International Journal of Electrochemical Science, vol. 13, no. 7, pp. 6676-6683 . https://doi.org/10.20964/2018.07.56