The oxygen evolution reaction (OER) is the half reaction in the overall reaction of electrocatalytic water splitting, and it involves four electron transfers. The aforementioned electron requirement implies that the OER requires more energy than the HER, thus limiting the overall water splitting efficiency. Here, we propose a novel anode catalyst by using an advanced composite material of selenized nickel–iron electrodes together with NiFe_LDH. An analysis of the water splitting performance was carried out in different concentrations of a seawater-like electrolyte, which, in terms of corrosion reactions, is a relatively harsher environment than that found in natural seawater. In this study, we discovered that a Se_NiFe foam electrode with an LDH layer exhibited extraordinary stability and activity in an aqueous sea-like solution, demonstrating an improved overpotential from the original 1.62 V–1.43 V in a seawater electrolyte mixture. Furthermore, the Tafel slope significantly decreased from 115.1 mV dec⁻¹ to 26.3 mV dec⁻¹. Notably, the lifespan of this novel electrode was extended from 80 h to 250 h. The mechanism of improved stability and corrosion resistance is also investigated in this study.

氧气析出反应（OER）是电催化水分解总反应中的一半反应，涉及四个电子转移。上述电子要求意味着OER比HER需要更多的能量，从而限制了总的水分解效率。在这里，我们通过使用硒化镍铁电极的先进复合材料与NiFe_LDH一起提出一种新型阳极催化剂。在不同浓度的海水状电解质中进行了水分解性能的分析，就腐蚀反应而言，该环境比天然海水中的环境更为恶劣。在这项研究中，我们发现带有LDH层的Se_NiFe泡沫电极在海状水溶液中显示出非凡的稳定性和活性，证明了海水电解质混合物中原始的1.62 V–1.43 V的改进的过电势。此外，Tafel斜率从dec的115.1 mV显着降低^-1至26.3 mV dec ^-1。值得注意的是，这种新型电极的寿命从80小时延长到250小时。在这项研究中还研究了提高稳定性和抗腐蚀性的机理。