▎ 摘　　要

Novel ternary proton exchange membranes composed of sulfonated polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (sPSEBPS), graphene oxide (GO) and ammonium ionic liquid (AIL) were prepared by a facile solution casting technique. The incorporation of GO and AIL into the sPSEBPS polymer matrix enhances the thermal stability and the ionic conductivity of the composites. The ion-exchange capacity of the membranes was found in the range between 0.281 and 1.248 meq. g(-1). The sPSEBPS/GO/AIL-20 composite membrane showed a proton conductivity of 0.0353 S. cm(-1) at 30 degrees C. The outcome of the results projected that the prepared polymer composite membranes are viable candidates for fuel cell applications.