Enhanced Oxygen Evolution in 0.1 % Fe-Doped NiS2 on Carbon Cloth

With increasing globalization and the urgent need for sustainable energy solutions, electrochemical water splitting has emerged as a crucial technology for clean energy production.In this study, we report the successful synthesis of 0.1 % Fe-doped NiS 2 via a one-step hydrothermal method.The incorporation of Fe into the NiS 2 matrix significantly enhances its electrochemical performance, as evidenced by a remarkable reduction in overpotential, to 180 mV at a current density of 10 mA cm -2 , compared to 250 mV for undoped NiS 2 .Additionally, the Fe-doped NiS 2 exhibits a reduced Tafel slope, high double layer capacitance, and lower charge transfer resistance than undoped NiS 2 , indicating improved reaction kinetics for oxygen evolution.These improvements are attributed to the enhanced conductivity and catalytic activity imparted by Fe doping, which facilitates more efficient charge transfer and reaction processes at the electrode surface.The results suggest that Fe-doped NiS 2 is a highly promising and robust candidate for applications in electrochemical energy conversion.Moreover, the doping strategy employed here offers a valuable approach for tailoring the properties of other metal sulfides and chalcogenides, paving the way for the design of next generation electrocatalysts that can drive large-scale energy conversion processes with minimal energy loss.