Self-supported Ni3N nanoarray as an efficient nonnoble-metal catalyst for alkaline hydrogen evolution reaction
| Autor: | Hong Wang, Yumin Ye, Xinmei Hou, Wenna Liu, Tianyi Xia, Zhentao Du, Zhi Fang |
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| Rok vydání: | 2021 |
| Předmět: |
Aqueous solution
Materials science Renewable Energy Sustainability and the Environment business.industry Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Catalysis Nickel Fuel Technology chemistry Chemical engineering Specific surface area Hydrogen economy Water splitting Nanorod 0210 nano-technology business |
| Zdroj: | International Journal of Hydrogen Energy. 46:27037-27043 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2021.05.188 |
| Popis: | Efficient, robust and low-cost hydrogen evolution reaction (HER) electrodes are highly desirable for realizing the hydrogen economy. Transition metal nitrides with suitable hydrogen adsorption energy have been demonstrated as excellent HER catalysts. Here, we report a simple one-step nitridation method to fabricate Ni3N nanorod arrays on nickel foam (NF) for electrocatalytic water splitting. Large specific surface area and good conductivity endow the self-supported Ni3N/NF electrode extremely low overpotential of η10 = 45 mV and excellent cycle stability for the HER in 1 M KOH aqueous solution. Based on theoretical calculations, it is further verified that nitridation effectively endows NF more suitable free energy for hydrogen adsorption, which leads to an advanced HER activity of Ni3N/NF. |
| Databáze: | OpenAIRE |
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