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In Situ Growth of $NiSe_{2}-MoSe_{2}$ Heterostructures on Graphene Nanosheets as High-Performance Electrocatalyst for Hydrogen Evolution Reaction
| Content Provider | MDPI |
|---|---|
| Author | Dai, Tianjun Zhou, Zhangyu Xiao, Han Luo, Yingchun Xu, Yongchi Wang, Xinqiang |
| Copyright Year | 2022 |
| Description | 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, $NiSe_{2}/MoSe_{2}$ heterostructures grown on graphene nanosheets $(NiSe_{2}-MoSe_{2}$ HTs/G) have been in situ synthesized by a simple hydrothermal reaction. As an electrocatalyst for HER, $NiSe_{2}-MoSe_{2}$ 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 $NiSe_{2}-MoSe_{2}$ heterostructures, which can facilitate the rapid electron transfer from the electrode to the exposed $MoSe_{2}$ 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. |
| Starting Page | 701 |
| e-ISSN | 20734344 |
| DOI | 10.3390/catal12070701 |
| Journal | Catalysts |
| Issue Number | 7 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-06-27 |
| Access Restriction | Open |
| Subject Keyword | Catalysts Analytical Chemistry Nise2/mose2 Heterostructures Synergistic Effect Electrocatalyst Her |
| Content Type | Text |
| Resource Type | Article |
