期刊
CATALYSTS
卷 12, 期 7, 页码 -出版社
MDPI
DOI: 10.3390/catal12070701
关键词
NiSe2; MoSe2 heterostructures; synergistic effect; electrocatalyst; HER
资金
- Discipline and Master's Site Construction Project of Guiyang University by Guiyang City Financial Support Guiyang University [2021-xk13]
- Key field Foundation of GuiZhou Provincial Department of Education [KY[2020]046]
- Natural Science Research Project of the Education Department of Guizhou Province [QJHKYZ[2020]089]
This study presents a simple approach for fabricating bimetallic selenides-based heterostructures on graphene as efficient and stable electrocatalysts for the hydrogen evolution reaction (HER). The NiSe2-MoSe2 HTs/G exhibits superior performance, which can be attributed to the synergistic effects of the NiSe2-MoSe2 heterostructures and the conductivity of the graphene matrix.
Developing highly efficient and stable electrocatalysts for hydrogen evolution reaction (HER) is regarded as a crucial way to reduce energy loss in water splitting. Herein, NiSe2/MoSe2 heterostructures grown on graphene nanosheets (NiSe2-MoSe2 HTs/G) have been in situ synthesized by a simple hydrothermal reaction. As an electrocatalyst for HER, NiSe2-MoSe2 HTs/G delivers superior performance with a low Tafel slope of 65 mV dec(-1), a small overpotential of 144 mV at 10 mA cm(-2), and long-term stability up to 24 h. The superior performance for HER can be mainly ascribed to the synergistic effects of NiSe2-MoSe2 heterostructures, which can facilitate the rapid electron transfer from the electrode to the exposed MoSe2 edges to take part in the HER reaction, thus boosting the HER kinetics. Moreover, the graphene matrix with high conductivity can not only improve the overall conductivity of the composite but also greatly increase the exposed active sites, therefore further promoting the HER performance. This study provides a simple route for fabricating bimetallic selenides-based heterostructures on graphene as an efficient and stable electrocatalyst for HER.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据