Abstract
The anion exchange membranes (AEMs) contain positively charged functional groups in their polymeric matrices to selectively transport anions including hydroxide ion. The desirable AEMs should satisfy high chemical resistance and excellent anion conductivity. Commercially available AEMs are vulnerable to thermo-chemical attacks at the alkaline conditions and undesirable to anion transport owing to their hydrocarbon matrices’ characteristics. On the other hand, the use of perfluorinated backbones as AEM matrices can provide a route to avoid these negative issues, since the perfluorinated materials have excellent chemical resistance to alkaline atmospheres and well-developed morphologies. In this study, perfluorinated AEMs were synthesized via stepwise chemical substitution reactions of a perfluorinated sulfonic acid precursor membrane. The resulting membranes were evaluated as polymer electrolytes for alkaline water electrolysis.
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