Erwan Coadou, L. Timperman, J. Jacquemin
May 13, 2013
Citations
0
Influential Citations
42
Citations
Journal
Journal of Physical Chemistry C
Abstract
The present work reports a comparative study on the performances of two bis[(trifluoromethyl)sulfonyl]imide-based protic (PIL) and aprotic (AIL) ionic liquids, namely, trimethyl-ammonium bis[(trifluoromethyl)sulfonyl]imide ([HN111][TFSI], PIL) and trimethyl-sulfonium bis[(trifluoromethyl)sulfonyl]imide ([S111][TFSI], AIL), as mixtures with three molecular solvents: gamma butyrolactone (γ-BL), propylene carbonate (PC), and acetonitrile (ACN) as electrolytes for supercapacitor applications. After an analysis of their transport properties as a function of temperature, cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanostatic charge–discharge measurements were conducted at 25 and −30 °C to investigate the performance of these mixtures as electrolytes for supercapacitors using activated carbon as the electrode material. Surprisingly, for each solvent investigated, no significant differences were observed between the electrolytes based on the PIL and AIL in their electrochemical p...