Azepanium-based ionic liquids as green electrolytes for high voltage supercapacitors

S. Pohlmann, T. Olyschlaeger, P. Goodrich, J. Alvarez Vicente, J. Jacquemin*, A. Balducci

*Corresponding author for this work

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

This work provides a first-time-study of Azepanium-based ionic liquids (ILs) as electrolyte components for electrochemical double layer capacitors (EDLCs). Herein, two Azepanium-based ILs, namely N-methyl, N-butyl-azepanium bis(trifluoromethanesulfonyl)imide (Azp(14)TFSI) and N-methyl, N-hexyl-azepanium bis(trifluoromethanesulfonyl)imide (Azp(16)TFSI) were compared with the established IL N-butyl, N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (Pyr(14)TFSI) in terms of viscosity, conductivity, thermal stability and electrochemical behavior in EDLC systems. The ILs' operative potentials were found to be comparable, leading to operative voltages up to 3.5 V without significant electrolyte degradation. 

Original languageEnglish
Pages (from-to)931-936
Number of pages6
JournalJournal of Power Sources
Volume273
Early online date02 Oct 2014
DOIs
Publication statusPublished - 01 Jan 2015

Keywords

  • Ionic liquids
  • Azepanium
  • Supercapacitors
  • High voltage
  • PHYSICOCHEMICAL PROPERTIES
  • CARBON
  • CAPACITORS
  • ENERGY
  • PERFORMANCE
  • STORAGE

Cite this

Pohlmann, S., Olyschlaeger, T., Goodrich, P., Vicente, J. A., Jacquemin, J., & Balducci, A. (2015). Azepanium-based ionic liquids as green electrolytes for high voltage supercapacitors. Journal of Power Sources, 273, 931-936. https://doi.org/10.1016/j.jpowsour.2014.09.167