High-temperature proton exchange membranes (HT-PEMs) based on amino-type polybenzimidazole (AmPBI) and double-bonded ionic liquids (ILs) are prepared. To prevent leakage of ILs, three kinds of polymeric ionic liquids (PILs) with different nitrogen positive sites are synthesized through in-situ free radical polymerization, and then the AmPBI-PIL membranes are prepared. The ion pairs (N - HPO) formed after treatment with KOH and PA have a good effect on both proton conductivity and PA retention. After acid doping, the nitrogen positive sites in the PILs form ion pairs with PA, which serves as a jumping site for protons and promotes proton transport. The excellent proton conductivity and PA remaining of the AmPBI-PIL membranes are noteworthy. In particular, the proton conductivity of AmPBI-CTDTr is as high as 184.9 mS cm at 180 °C, and the acid reservation is 83 % at 160 °C after 240 h. AmPBI-CTDTr has a 550.9 mW cm peak power density when it is anhydrous at 160 °C.

中文翻译：

---

氮正位点对聚苯并咪唑基质子交换膜质子电导率和酸稳定性的影响


制备了基于氨基型聚苯并咪唑（AmPBI）和双键离子液体（IL）的高温质子交换膜（HT-PEM）。为了防止离子液体的泄漏，通过原位自由基聚合合成了三种具有不同氮正位点的聚合离子液体（PIL），然后制备了AmPBI-PIL膜。 KOH和PA处理后形成的离子对（N-HPO）对质子传导性和PA保留都有良好的作用。酸掺杂后，PIL 中的氮正位点与 PA 形成离子对，作为质子的跳跃位点并促进质子传输。 AmPBI-PIL 膜出色的质子电导率和 PA 残留量值得注意。特别是，AmPBI-CTDTr在180°C下的质子电导率高达184.9 mS cm，在160°C下240小时后的酸保留率为83%。 AmPBI-CTDTr 在 160 °C 无水状态下的峰值功率密度为 550.9 mW cm。