High-performance and durable anion exchange membranes (AEMs) are critical for realizing economical green hydrogen production through alkaline water electrolysis (AWE) or AEM water electrosysis (AEMWE). However, existing AEMs require sophisticated fabrication protocols and exhibit unsatisfactory electrochemical performance and long-term durability. Here we report an AEM fabricated via a one-pot, in situ interfacial Menshutkin reaction, which assembles a highly cross-linked polymer containing high-density quaternary ammoniums and nanovoids inside a reinforcing porous support. This structure endows the membrane with high anion-conducting ability, water uptake (but low swelling), and mechanical and thermochemical robustness. Consequently, the assembled membrane achieves excellent AWE (0.97 A cm^–2 at 1.8 V) and AEMWE (5.23 A cm^–2 at 1.8 V) performance at 5 wt % KOH and 80 °C, significantly exceeding that of commercial and previously developed membranes, and excellent long-term durability. Our approach provides an effective method for fabricating AEMs for various energy and environmental applications.

中文翻译：

---

用于水电解的界面组装阴离子交换膜


高性能和耐用的阴离子交换膜 （AEM） 对于通过碱性水电解 （AWE） 或 AEM 水电系统 （AEMWE） 实现经济的绿色氢气生产至关重要。然而，现有的 AEM 需要复杂的制造方案，并且表现出不令人满意的电化学性能和长期耐用性。在这里，我们报道了通过一锅法原位界面 Menshutkin 反应制备的 AEM，该反应在增强多孔载体内组装了含有高密度季铵和纳米空隙的高度交联聚合物。这种结构赋予膜高阴离子传导能力、吸水率（但低溶胀性）以及机械和热化学稳定性。因此，组装的膜在 5 wt % KOH 和 80 °C 下实现了优异的 AWE（1.8 V 时 0.97 A cm^–2）和 AEMWE（1.8 V 时 5.23 A cm^–2）性能，明显超过了商业和以前开发的膜，并具有出色的长期耐用性。我们的方法为制造用于各种能源和环境应用的 AEM 提供了一种有效的方法。