Herein, we investigate the effects of catholyte feed method and anode binder content on the characteristics of anion exchange membrane water electrolysis (AEMWE) to construct a high-performance electrolyzer, revealing that the initial AEMWE performance is significantly improved by pre-feeding 0.5 M aqueous KOH to the cathode. The highest long-term activity during repeated voltage cycling is observed for AEMWE operation in the dry cathode mode, for which the best long-term performance among membrane electrode assemblies (MEAs) featuring polytetrafluoroethylene (PTFE) binder–impregnated (5–20 wt%) anodes is detected for a PTFE content of 20 wt%. MEAs with low PTFE content (5 and 9 wt%) demonstrate high initial performance, rapid performance decay, and significant catalyst loss from the electrode during long-term operation, whereas the MEA with 20 wt% PTFE allows stable water electrolysis for over 1600 voltage cycles. Optimization of cell operating conditions (i.e., operation in dry cathode mode at an optimum anode binder content following an initial solution feed) achieves an enhanced water splitting current density (1.07 A cm⁻² at 1.8 V) and stable long-term AEMWE performance (0.01% current density reduction per voltage cycle).

在本文中，我们研究了阴极电解液进料方法和阳极粘结剂含量对阴离子交换膜水电解（AEMWE）特性的影响，从而构建了高性能电解槽，揭示了通过预先进料0.5 M水溶液显着提高了初始AEMWE性能。 KOH到阴极。对于干式阴极模式下的AEMWE操作，在重复电压循环过程中观察到了最高的长期活性，在其中浸渍了聚四氟乙烯（PTFE）粘合剂的膜电极组件（MEA）中，其最佳的长期性能是（5-20​​ wt％ ）检测到阳极的PTFE含量为20 wt％。低PTFE含量（5和9 wt％）的MEA表现出较高的初始性能，快速的性能衰减以及长期运行过程中电极上明显的催化剂损失，而含有20 wt％PTFE的MEA可在超过1600个电压循环中实现稳定的水电解。最佳的电池工作条件（即在初始溶液进料后以最佳阳极粘合剂含量在干阴极模式下运行）可实现更高的分水电流密度（1.07 A cm在1.8 V时为⁻²）和稳定的长期AEMWE性能（每个电压周期电流密度降低0.01％）。