刘艳茹

副教授

副教授 硕士生导师

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所在单位:科研中心

学历:博士研究生

论文成果

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Mo, Co co-doped NiS bulks supported on Ni foam as an efficient electrocatalyst for overall water splitting in alkaline media

发布时间:2021-03-15 点击次数:

关键字:HYDROGEN EVOLUTION REACTION; BIFUNCTIONAL ELECTROCATALYST; MOLYBDENUM SULFIDE; NICKEL FOAM; CARBON; ARRAYS; NANOSPHERES; NANOSHEETS; NANOSTRUCTURES; PERFORMANCE
摘要:In this study, a composite of Mo, Co co-doped NiS bulks grown on an Ni foam (Mo,Co-NiS/NF) was synthesized as a bi-functional electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) using a simple method. The existence of ZIF-67 and Mo ensure the even distribution of Co and Mo elements and the formation of N doped carbon layer in Mo, Co-NiS/NF. Mo, Co co-doping and NF support greatly improved the electrocatalytic performance of NiS bulks, because metal element doping could improve the intrinsic activity and electrical conductivity. Moreover, the Ni foam could act as a substrate to avoid aggregation and provide nickel source to form the bimetallic sulfide. The product Mo,Co-NiS/NF-400 showed outstanding electrochemical properties, with ultralow overpotential (92 mV vs. RHE) for HER and ultralow overpotential (117.2 mV vs. RHE) for OER to achieve 10 mA cm(-2), as well as the ultralow cell voltage (1.36 V) to achieve 20 mA cm(-2) for overall water splitting. This study provides an available method to promote the electrocatalytic activity of the traditional monometallic sulfides for overall water splitting.
卷号:4
期号:4
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