AC Impedance and Conductivity Study of Alkali Salt Form Perfluorosulfonate Ionomer Membranes

AC impedance studies were performed on Na+ and K+ alkali salt forms of the short sidechain perfluorosulfonate ionomer (PFSI) membrane films manufactured by Dow Chemical Company. With impressive performances of 4 A/cm2current density and power densities near 2.5 W/cm2, the acid forms of these short sidechain PFSI are very promising candidates for use in fuel cells for future electric vehicles.1 Since, at present, little is known about the exact …