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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

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2014, 15(3), pp.187-191
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General

Kyungmin Kim 1 정영주 2 Kim Seok 1

1부산대학교
2한국기술교육대학교

Accredited

ABSTRACT

This study reports on the influence of N-butyl-N-methylpyrrolidinium tetrafluoroborate(PYR14BF4) ionic liquid additive on the conducting and interfacial properties of organicsolvent based electrolytes against a carbon electrode. We used the mixture of ethylenecarbonate/dimethoxyethane (1:1) as an organic solvent electrolyte and tetraethylammoniumtetrafluoroborate (TEABF4) as a common salt. Using the PYR14BF ionic liquid asadditive produced higher ionic conductivity in the electrolyte and lower interface resistancebetween carbon and electrolyte, resulting in improved capacitance. The chemicaland electrochemical stability of the electrolyte was measured by ionic conductivity meterand linear sweep voltammetry. The electrochemical analysis between electrolyte andcarbon electrode was examined by cyclic voltammetry and electrochemical impedancespectroscopy.

Citation status

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This paper was written with support from the National Research Foundation of Korea.