Characterization of Thermal, Ionic Conductivity and Electrochemical Properties of Some p-Tosylate Anions-Based Protic Ionic Compounds

In the present work, six protic ionic liquid (PIL) compounds based on p-toluene sulfonic acid [PTSA] anion along with different cations viz. tetraethylenepentammonium [TEPA], triethylammonium [TEA], pyridinium [Py], N-methylpiperidinium [Pip], 1-methylimidazolium [Im], and N-methylpyrrolidinium [Pyrr] were synthesized using standard neutralization reaction method. The structural characterization of these was achieved FTIR, 1H 13C NMR spectroscopies. Thermal behavior studied differential scanning calorimetry to determine melting point (Tm) crystallization (Tc) temperatures. Thermogravimetric analysis carried out thermal stability degradation temperatures (Tdec) ascertain hygroscopic or hydrophobic nature compounds. Structural effects outcome various properties witnessed discussed in detail. Electrochemical impedance spectroscopy utilized study electrical transport PILs at Cyclic voltammetry performed analyze electrochemical PILs. Low values activation energy indicating easy proton transportation good make a potential candidate for use preparation polymer electrolytes membranes fuel cell applications.