Crosslinked Block Copolymer Electrolyte Membranes with High Proton Conductivity

摘要

polystyrene-b-poly(hydroxyethyl acrylate)-b-poly(styrene sulfonic acid), (PS-b-PHEA-b-PSSA) at 23:23:54 wt ratios and polystyrene-b-poly(hydroxyethyl acrylate)-b-poly(sulfopropyl methacrylate), (PS-b-PHEA-b-PSPMA) at 17:17:66 wt ratios were sequentially synthesized via atom transfer radical polymerization for PEMFC. As increasing amounts of SA, ion exchange capacity (IEC) continuously increased for both membranes but water uptake decreased. As a result, the proton conductivities of crosslinked triblock copolymer membranes increased up to 0.049 and 0.037 S/cm at room temperature.