Recent progress in the development of water oxidation electrocatalysts has mainly focused on achieving high performance in a single measurement, while the importance of durability has not yet been deeply studied. Additionally, oxygen evolution reaction (OER) involves a phase transition from a liquid to a gas, and thus, the removal of the generated oxygen bubble is an important factor for improving the activity or maintaining the performance. In this study, 3D ordered nanoporous nickel electrode is synthesized with a thickness of 5 µm by using a templating method composed of proximity field nanopatterning (PnP) and electrodeposition followed by introduction of NiFe(OH)₂ on the nickel electrode to increase the OER activity. The unique nanopore array structure of the electrode has advantages of not only an enlarged active surface area but also the fast removal of oxygen bubbles by spatial confinement effect. Consequently, the NiFe-decorated 3D ordered nanoporous nickel electrode shows a highly efficient oxygen-evolving ability with a turnover frequency of 2.9 s⁻¹ and an ultralong durability of 300 h.

在水氧化电催化剂开发方面的最新进展主要集中于在单次测量中实现高性能，而耐久性的重要性尚未得到深入研究。另外，氧气析出反应（OER）涉及从液体到气体的相变，因此，所产生的氧气气泡的去除是提高活性或保持性能的重要因素。在这项研究中，通过使用由邻近场纳米图案（PnP）和电沉积组成，然后引入NiFe（OH）₂的模板化方法，合成了厚度为5 µm的3D有序纳米多孔镍电极。在镍电极上以增加OER活性。电极的独特纳米孔阵列结构不仅具有扩大的有效表面积，而且还具有通过空间限制效应快速去除氧气泡的优点。因此，装饰有NiFe的3D有序纳米多孔镍电极表现出高效的析氧能力，其周转频率为2.9s ^-1和300h的超长耐久性。