Li Longzhen, Lin Shuangyan, Xu Zhikun, Li Tianle, Zhao Zhifeng
School of Chemistry, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, PR China.
School of Science, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, PR China.
Langmuir. 2025 Jul 1;41(25):16581-16590. doi: 10.1021/acs.langmuir.5c02010. Epub 2025 Jun 19.
Designing effective oxygen evolution reaction (OER) electrocatalysts for seawater electrolysis necessitates the simultaneous optimization of catalytic activity and chlorine corrosion resistance. Herein, Fe-doped NiS/NiS on nickel foam (Fe-NiS/NiS/NF) was prepared through sulfurization of the Fe-doped Ni(OH) precursor. The sulfurization process induces electronic structure modulation, optimizing charge transfer kinetics and generating a high density of catalytically active sites. As a result, Fe-NiS/NiS demonstrates exceptional OER performance, achieving an overpotential of only 320 mV at an industrial current density of 1000 mA cm in alkaline freshwater. Notably, in alkaline seawater, Fe-NiS/NiS maintains outstanding activity (397 mV @ 1000 mA cm) and operational stability (at least 150 h at 100 mA cm). Furthermore, the Fe-NiS/NiS/NF||Pt/C requires a low voltage of 1.73 V to deliver 100 mA cm and exhibits at least 200 h stability, demonstrating its great potential for industrial seawater electrolysis applications.
设计用于海水电解的高效析氧反应（OER）电催化剂需要同时优化催化活性和耐氯腐蚀性。在此，通过对铁掺杂的Ni(OH)前驱体进行硫化制备了泡沫镍上的铁掺杂NiS/NiS（Fe-NiS/NiS/NF）。硫化过程引起电子结构调制，优化电荷转移动力学并产生高密度的催化活性位点。结果，Fe-NiS/NiS表现出优异的OER性能，在碱性淡水中工业电流密度为1000 mA cm时过电位仅为320 mV。值得注意的是，在碱性海水中，Fe-NiS/NiS保持出色的活性（1000 mA cm时为397 mV）和操作稳定性（100 mA cm下至少150小时）。此外，Fe-NiS/NiS/NF||Pt/C在提供100 mA cm时需要1.73 V的低电压，并表现出至少200小时的稳定性，证明了其在工业海水电解应用中的巨大潜力。
