Enhanced conductivity in polyanion-containing polybenzimidazoles. Improved materials for proton-exchange membranes and PEM fuel cells
作者： Juan Antonio Asensio , Salvador Borrós , Pedro Gómez-Romero
DOI: 10.1016/J.ELECOM.2003.09.007
关键词:
摘要: In an effort to develop improved Proton Exchange Membranes for Polymeric Fuel cells two different forms of polyanion inclusion in poly(2,5-benzimidazole) (ABPBI) have been carried out. Namely by (i) sulfonation pre-formed polymer membranes and (ii) addition inorganic phosphomolybdic acid form hybrid ABPBI–PMo12 membranes. both cases we detected increased proton conductivity the resulting membranes, associated enhanced capacity polyanion-modified materials uptake phosphoric (in comparison with previously known ABPBI or even commercial PBI membranes). These new are stable up 200 °C feature high conductivities at these temperatures, which makes them promising candidates higher-temperature PEM Cells.
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