Abstract Poly(arylene piperidine)s (PAPs) backbones, which do not contain unstable ether bonds, was synthesized by one-pot, metal-free superacid-catalyzed polymerization for anion exchange membranes (AEMs) preparation. Meta-terphenyl as a monomer of polymer to regulate the morphology and properties of AEM was also used due to its spatially torsional configuration instead of the recently reported linear structure of peta-terphenyl. Long flexible hydrophilic chains were grafted onto poly(meta terphenyl piperidinium) (m-PTP) backbone to form four cationic functionalized side chains, promoting efficient transfer of OH− and optimizing the hydrophilic/hydrophobic microphase separation structure. The resulting AEM shows a high ion conductivity of 164 mS/cm (m-PTP-TFPE-21) at 80 °C. Furthermore, stable piperidine cation and long alkyl spacer chain contributed to the excellent alkali stability of m-PTP-TFPE-TQA membrane which shows only 11.67% and 12.73% degradation in ion conductivity and IEC, respectively, after soaking in 2 M NaOH at 80 °C for 1500 h. The peak power density of the H2/O2 single cell using m-PTP-TFPE-14 is 269 mW/cm2 at a current density of 540 mA/cm2 at 80 °C.

中文翻译：

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用于碱性燃料电池膜的具有高导电侧链的化学稳定聚（间三联苯哌啶鎓）

摘要 聚（亚芳基哌啶）s（PAPs）主链不含不稳定的醚键，是通过一锅法、无金属超强酸催化聚合反应合成的，用于制备阴离子交换膜（AEMs）。间三联苯作为聚合物单体来调节 AEM 的形态和性质，由于其空间扭转构型而不是最近报道的对三联苯的线性结构，因此也被使用。长的柔性亲水链接枝到聚（间三联苯哌啶鎓）（m-PTP）主链上形成四个阳离子官能化侧链，促进 OH− 的有效转移并优化亲水/疏水微相分离结构。所得 AEM 在 80 °C 下显示出 164 mS/cm (m-PTP-TFPE-21) 的高离子电导率。此外，稳定的哌啶阳离子和长烷基间隔链有助于 m-PTP-TFPE-TQA 膜的优异碱稳定性，在 80 °C 下浸泡在 2 M NaOH 中后，离子电导率和 IEC 分别仅降低 11.67% 和 12.73% 1500 小时。使用 m-PTP-TFPE-14 的 H2/O2 单电池的峰值功率密度为 269 mW/cm2，电流密度为 540 mA/cm2，80 °C。