Anion exchange membrane (AEM) water electrolyser provides a promising alternative to proton exchange membrane water electrolysis due to the relative cheap of AEM and no-need of expensive platinum group catalysts. However, the development of AEM water electrolyser is hampered by the low alkaline and dimensional stability of AEMs, especially in highly concentrated alkaline solution and at elevated temperatures. Recently we synthesized a poly(triphenyl N-methylquinuclidinium) AEM with excellent alkaline stability. To further improve the mechanical strength and dimensional stability of this kind of AEM, in this work, we added trifluoacetophenone to prepare a poly(triphenyl trifluoacetophenone N-methylquinuclidinium) membrane, which exhibits superior alkaline stability (no degradation of conductivity and mechanical strength for 1600 h in 10 mol L⁻¹ NaOH at 80°C), excellent dimensional stability (swelling ratio: <7%, in pure water, 30–80°C; <2%, in 10 mol L⁻¹ NaOH, 30–80°C), high OH⁻ conductivity (134.5 mS cm⁻¹ at 80°C) and high mechanical strength (tensile strength = 43.2 MPa). The assembled water electrolyser, comprising this AEM and nickel-alloy foam electrodes, exhibits outstanding current density (1780 mA cm⁻²) at 2.0 V with 5 mol L⁻¹ KOH aqueous electrolyte at 80°C, and high durability when assembled with nickel foam electrodes.

阴离子交换膜 (AEM) 水电解槽由于 AEM 相对便宜且不需要昂贵的铂族催化剂，为质子交换膜水电解提供了一种有前景的替代方案。然而，AEM水电解槽的发展受到AEM的低碱性和尺寸稳定性的阻碍，特别是在高浓度碱性溶液和高温下。最近我们合成了具有优异碱性稳定性的聚(三苯基N-甲基奎宁环)AEM。为了进一步提高此类AEM的机械强度和尺寸稳定性，在这项工作中，我们添加三氟苯乙酮制备了聚（三苯基三氟苯乙酮N-甲基奎宁鎓）膜，该膜表现出优异的碱性稳定性（1600小时电导率和机械强度没有下降） h 在 10 mol L ^-1 NaOH 中，80°C），优异的尺寸稳定性（溶胀率：<7%，在纯水中，30–80°C；<2%，在 10 mol L ^-1 NaOH 中，30–80 °C）、高 OH ^-电导率（80°C 时为 134.5 mS cm ^-1）和高机械强度（拉伸强度 = 43.2 MPa）。由该AEM和镍合金泡沫电极组成的组装水电解槽在80°C 、5 mol L ^{-1 KOH水电解液、2.0 V电压下表现出出色的电流密度（1780 mA cm -2} ） ，并且在与镍组装时具有高耐用性泡沫电极。