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RESEARCH PRODUCT

Ionic Liquid Composite Polybenzimidazol Membranes for High Temperature PEMFC Applications

Oscar SahuquilloVicente CompañJorge EscorihuelaJorge EscorihuelaÁLvaro MonteroEnrique GiménezAbel García-bernabé

subject

Materials scienceTetrafluoroboratematerials sciencePolymers and PlasticspolymerComposite numberProton exchange membrane fuel cellfuel cellsConductivityArticlelcsh:QD241-441chemistry.chemical_compoundlcsh:Organic chemistryCompostos organometàl·licsPhosphoric acidionic liquidConductivitat elèctricaGeneral ChemistryDielectric spectroscopypolybenzimidazoleelectrochemical impedance spectroscopyMembranechemistryChemical engineeringproton conductivityIonic liquidproton exchange membrane

description

A series of proton exchange membranes based on polybenzimidazole (PBI) were prepared using the low cost ionic liquids (ILs) derived from 1-butyl-3-methylimidazolium (BMIM) bearing different anions as conductive fillers in the polymeric matrix with the aim of enhancing the proton conductivity of PBI membranes. The composite membranes prepared by casting method (containing 5 wt. % of IL) exhibited good thermal, dimensional, mechanical, and oxidative stability for fuel cell applications. The effects of anion, temperature on the proton conductivity of phosphoric acid-doped membranes were systematically investigated by electrochemical impedance spectroscopy. The PBI composite membranes containing 1-butyl-3-methylimidazolium-derived ionic liquids exhibited high proton conductivity of 0.098 S&middot

yearjournalcountryeditionlanguage
2019-04-22Polymers
https://doi.org/10.3390/polym11040732