(20f) High Temperature Proton Exchange Membrane Based on Polycation – Polybenzimidazole Blends
This talk will discuss a new class of high temperature anhydrous proton conducting membrane based upon PA â PBI â polycation blends. The polycation is based upon quaternary benzyl pyridinium polysulfone. The blended membranes doped with PA displayed proton conductivity up to 0.28 S cm-1 with stability up to 240 Â°C. Similar proton conductivity results were attained for thin film ionomer variants implying that this material, unlike Nafion, does not lose its proton conductivity under thin film confinement in electrode layers. Finally, the talk will present fuel cell, electrolysis, and supercapacitor device performance at temperatures well above 100 Â°C demonstrating the versatility and effectiveness of these new membrane and solution processable ionomer binder materials.