preparation and evaluation of sulfonated polysulfone-tio2 nanocomposite membranes for proton exchange membrane fuel cell applications

In the present study, sulfonated polysulfone (spsf)-titanium dioxide (tio2) nanocomposite membranes were prepared for use in proton exchange membrane fuel cells (pemfcs) applications# the degree of sulfonation of prepared spsf polymer was obtained by h-nmr analysis and was 91%# tio2 nanoparticles were synthesized by the sol-gel method and characterized by xrd# the membranes were prepared by the solution casting method and nmp was used as a solvent for this process# the composite membranes were prepared by mixing tio2 with spsf solution (3 and 5 wt#%)# the membranes have been characterized by water uptake and proton conductivity measurements# the results showed the prepared membranes have appropriate proton conductivity values#