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Korean Carbon Society (한국탄소학회)
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Influence of ionic liquid additives on the conducting and interfacial properties of organic solvent-based electrolytes against an activated carbon electrode

  • Kim, Kyungmin (Department of Chemical and Biochemical Engineering, Pusan National University) ;
  • Jung, Yongju (Department of Applied Chemical Engineering, Korea University of Technology and Education) ;
  • Kim, Seok (Department of Chemical and Biochemical Engineering, Pusan National University)
  • Received : 2014.06.01
  • Accepted : 2014.06.27
  • Published : 2014.07.31
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Abstract

This study reports on the influence of N-butyl-N-methylpyrrolidinium tetrafluoroborate ($PYR_{14}BF_4$) ionic liquid additive on the conducting and interfacial properties of organic solvent based electrolytes against a carbon electrode. We used the mixture of ethylene carbonate/dimethoxyethane (1:1) as an organic solvent electrolyte and tetraethylammonium tetrafluoroborate ($TEABF_4$) as a common salt. Using the $PYR_{14}BF$ ionic liquid as additive produced higher ionic conductivity in the electrolyte and lower interface resistance between carbon and electrolyte, resulting in improved capacitance. The chemical and electrochemical stability of the electrolyte was measured by ionic conductivity meter and linear sweep voltammetry. The electrochemical analysis between electrolyte and carbon electrode was examined by cyclic voltammetry and electrochemical impedance spectroscopy.

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References

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