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 language | English |
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Pages (from-to) | 931-936 |
Number of pages | 6 |
Journal | Journal of Power Sources |
Volume | 273 |
Early online date | 02 Oct 2014 |
DOIs | |
Publication status | Published - 01 Jan 2015 |
Keywords
- Ionic liquids
- Azepanium
- Supercapacitors
- High voltage
- PHYSICOCHEMICAL PROPERTIES
- CARBON
- CAPACITORS
- ENERGY
- PERFORMANCE
- STORAGE