Synthesis and alkaline stability of Aquivion-based perfluorinated anion exchange membranes.

ABSTRACT: Quaternized perfluorinated polymers are promising anion exchange membranes (AEMs) for hydrogen energy devices due to their excellent dimensional stability and high ionic conductivity, which arise from limited ion exchange capacities (IECs) and well-developed hydrophilic/hydrophobic microphase-separated morphologies. However, their poor alkaline stability remains a critical challenge. In this study, a series of Aquivion-based perfluorinated AEMs was synthesized with varied tethering structures to systematically examine the effects of sulfonyl-containing linkages, alkyl spacers, and nitrogen-based cyclic cationic end groups on alkaline stability. We specifically introduced sulfonate ester linkages and alkaline-stable cationic groups, such as N-methylpiperidinium and 1,2-dimethylimidaz

SUBMITTER: Jheng LC 

PROVIDER: S-EPMC12895401 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature