Synthesis and electrochemical properties of new dicationic ionic liquids
By Mei, Xinyi; Yue, Zheng; Ma, Qiang; Dunya, Hamza; Mandal, Braja K.
Published in Journal of Molecular Liquids
2018
Abstract
Three classes of dicationic ionic liquids (DILs) were synthesized, in which the cationic species [N?methyl pyrrolidinium (MPy), N?butyl imidazolium (BIm) or diethylsulfide (DES)] were separated with oligoether moieties. The counter anions are either dicyanamide (DCA) or bis(trifluoromethane sulfonyl)imide (TFSI). The molecular structures of these compounds were identified by FT-IR, 1H NMR and 13C NMR analysis. The DILs were investigated for their potential as electrolyte solvents. Thermal behaviors were also studied by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) showing excellent thermal stability up to 150