Synthesis and properties of novel sulfonated poly(arylene ether sulfone) ionomers for vanadium redox flow battery

摘要: Abstract Novel sulfonated poly(arylene ether sulfone)s with electron-withdrawing sulfone groups in each repeat unit were synthesized via step polymerization followed by post-sulfonation using chlorosulfonic acid. The sulfonation degree can be readily controlled adjusting the feed ratio of polymers to are soluble common aprotic solvents such as dimethyl sulfoxide, N,N′-dimethylacetamide and dimethylformamide, cast into transparent membranes from their solutions. ion exchange capacity, water uptake, swelling ratio, degree, mechanical property, oxidative thermal property proton conductivity investigated detail different methodologies. As an objective apply these separators for vanadium redox flow battery, VO2+ permeability cell performance single examined assessed.