High Proton Conductivity Membrane Based on Sulfonated Polybenzimidazole by Doping Ethylenediaminetetraacetic Acid-Modified MOF-808 for Vanadium Flow Battery
Tongtong Gao,
Cuicui Li,
Wenyu Bai
et al.
Abstract:The composite membrane (sPBI–MGE-x) is
prepared by introducing MOF-808-grafted ethylenediaminetetraacetic
acid (EDTA) into the sulfonated polybenzimidazole (sPBI) with a sulfonation
degree of 50. MOF-808, one of Zr-based metal organic frameworks, has
tunable pore size, plenty of pathways for proton transport, and superior
acid stability. After MOF-808 is grafted by EDTA, the obtained MOF-808-EDTA
(MGE) has the amino and carboxyl groups, which can provide additional
proton transport channels and the acid–base p… Show more
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