Development of phosphonium-based bicarbonate anion exchange polymer membranes
Academic Article
Overview
Research
Identity
Additional Document Info
Other
View All
Overview
abstract
We report the preparation and characterization of phosphonium-based bicarbonate anion exchange random copolymers, poly(styrene-random-trimethylvinylbenzyl phosphonium bicarbonate) (poly(S-r-TMVBP-HCO3)). Compared to the chloride anion (Cl-) exchange membranes, these HCO3- exchange membranes exhibit similar hydration levels and only slightly lower ionic conductivities at similar ionic compositions. Other experiments reveal that the HCO3- exchange membranes are thermally stable (up to 110C) and chemically stable under relatively low alkaline conditions. Additionally, a detailed chemical degradation mechanism for these membranes under strong alkaline conditions is presented. 2013 Elsevier B.V.