Interface engineering of Ni0.85Se/Ni3S2 nanostructure for highly enhanced hydrogen evolution in alkaline solution
| Autor: | Deyou Jin, Qi Shan, Dunhui Wang, Qiang Chen, Dongdong Shi, Liqian Wu, Meiyu Chen |
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| Rok vydání: | 2022 |
| Předmět: |
Materials science
Nanostructure Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology Heterojunction engineering.material Overpotential Condensed Matter Physics Electrochemistry Electrocatalyst Fuel Technology Chemical engineering X-ray photoelectron spectroscopy engineering Noble metal High-resolution transmission electron microscopy |
| Zdroj: | International Journal of Hydrogen Energy. 47:305-313 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2021.10.031 |
| Popis: | Interface engineering is considered as an effective strategy to improve the hydrogen evolution reaction (HER) performance of electrocatalysts. Herein, the Ni0.85Se/Ni3S2 heterostructure grown on nickel foam (NF) is synthesized via successive wet-chemical processes. The obtained Ni0.85Se/Ni3S2 heterostructure is firstly investigated as an HER electrocatalyst in alkaline media and exhibits more excellent electrochemical properties over Ni3S2. And it delivers a low overpotential of 145 mV at a current density of −10 mA cm−2, and superior stability. Based on the analysis of high-resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectra (XPS), the enhanced HER activity is due to the modulation of surface electronic structure, ascribing from the construction of heterointerface between Ni0.85Se and Ni3S2. Meanwhile, the Ni0.85Se/Ni3S2 heterostructure prepared in this work is also verified to be employed as a promising alternative to noble metal catalysts in HER. |
| Databáze: | OpenAIRE |
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