Physicochemical properties of proton conducting membranes based on ionic liquid impregnated polymer for fuel cells

摘要: Polymer electrolyte membranes containing a room temperature ionic liquid, 2,3-dimethyl-1-octylimidazolium triflate (DMOImTf) in polyvinylidenefluoride-co-hexafluoropropylene (PVdF-HFP), show conductivity of 0.96 × 10−3 S cm−1 at 80 °C. The addition triflic acid (HCF3SO3) increases the polymer electrolytes by providing free H+ ions, which is important for their potential use proton exchange membrane fuel cells (PEMFCs) and other electrochemical devices. Line narrowing observed variation 1H 19F NMR line width with shows that both protons anions are mobile these electrolytes. have been found to be thermally stable up 200–300 liquid also tested single cell under non-humid conditions electroactive hydrogen oxidation oxygen reduction platinum electrodes.