Fe掺杂NiSe@NiS复合材料电子调制和界面协同促进析氧性能研究

Electronic modulation and synergistic effect on Fe-doped NiSe@NiS composites to improve oxygen evolution performance

摘要: 本研究采用溶剂热法，在泡沫镍（NF）基底上原位合成出Fe掺杂的硒化镍和硫化镍复合材料（Fe-NiSe@NiS/NF）。得益于Fe掺杂优化的电子结构、NiSe和NiS间的协同效应以及高效的电荷转移速率，Fe-NiSe@NiS/NF在1 mol/L KOH溶液中表现出优异的OER性能。在过电位为330 mV时可实现电流密度150 mA/cm²，且电压在稳定40 h后没有发生显著改变。

Abstract: In this paper, Fe-doped nickel selenide and nickel sulfide composites was in-situ grown on nickel foam (NF) to prepare Fe-NiSe@NiS/NF by solvothermal method. Benefit from the optimized electron structure by Fe doping, the synergistic effect of NiSe@NiS and faster electron transfer, Fe-NiSe@NiS/NF exhibited excellent OER activity with the overpotential of 330 mV at 150 mA/cm² in 1 mol/L KOH solution. The voltage barely changed after 40 h of test.