In Situ Crosslinked Diallylammonium-Functionalized Poly(Biphenyl Alkylene) for High-Performance Anion Exchange Membranes.

ABSTRACT: The intrinsic trade-off between ion conductivity and mechanical integrity in high-ion exchange capacity (IEC) anion exchange membranes (AEMs) has remained a major challenge for the practical implementation of anion exchange membrane water electrolyzer (AEMWE) technology. Here, crosslinked AEMs (BP-cross-PDAA) is developed via free-radical cyclopolymerization of diallylammonium-functionalized poly(biphenyl alkylene), where the IEC (n) is precisely tuned from 2.32 meq g^-1 to 3.39 meq g^-1 by adjusting the content of diallyldimethylammonium comonomer. BP-cross-PDAA membranes exhibited excellent hydration characteristics, including hydroxide conductivity (up to 152.4 mS cm^-1 at 80 °C), swelling ratio (24.2%), and alkaline stability (98.7% retention over 350 h),

SUBMITTER: Jung J 

PROVIDER: S-EPMC12824562 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature