Designing high-performance and cost-effective oxygen-evolution electrocatalysts is highly required toward sustainable water electrolysis. Surface reconstruction is a promising strategy to realize the improvement of the oxygen-evolution reaction (OER) performance of transition metal-based electrocatalysts. Herein, we present a simple electrospinning-post treatment route to construct a novel Fe(III)/NiS electrocatalyst and investigate the key role of the surface reconstruction to significantly promote the OER performance. Owing to the unique tubular morphology and the formation of the highly efficient electrochemical active species of Ni(Fe)OOH during OER process, the prepared Fe(III)/NiS nanotubular catalyst exhibits a low overpotential of 264 mV at 10 mA cm⁻², superior to the benchmark RuO₂ and many other metal sulfide electrocatalysts. Furthermore, the catalyst also presents an excellent durability with no distinct activity reduction for over 70 h. This study offers a reliable surface reconstruction way to fabricate high-efficiency and outstanding durable OER electrocatalyst, enabling it promising prospect for water electrolysis with a reduced energy consumption.

设计高性能且具有成本效益的析氧电催化剂对于可持续的水电解非常重要。表面重构是实现过渡金属基电催化剂析氧反应（OER）性能改善的一种很有前途的策略。在此，我们提出了一种简单的静电纺丝后处理路线来构建新型 Fe(III)/NiS 电催化剂，并研究表面重建对显着提升 OER 性能的关键作用。由于在 OER 过程中独特的管状形态和高效电化学活性物质 Ni(Fe)OOH 的形成，制备的 Fe(III)/NiS 纳米管催化剂在 10 mA cm ^-2下表现出 264 mV 的低过电势，优于基准 RuO ₂和许多其他金属硫化物电催化剂。此外，该催化剂还具有出色的耐久性，在 70 小时以上没有明显的活性降低。这项研究提供了一种可靠的表面重构方法来制造高效和出色耐用的 OER 电催化剂，使其在降低能耗的水电解方面具有广阔的前景。