Three-dimensional Ni2P–MoP2 mesoporous nanorods array as self-standing electrocatalyst for highly efficient hydrogen evolution
| Autor: | C.D. Nguyen, Van-Huy Nguyen, Thien Y Vu, L.M.T. Pham |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Tafel equation
Materials science Hydrogen Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology chemistry.chemical_element Context (language use) 02 engineering and technology Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrocatalyst 01 natural sciences 0104 chemical sciences Catalysis Fuel Technology Chemical engineering chemistry Nanorod 0210 nano-technology Mesoporous material |
| Zdroj: | International Journal of Hydrogen Energy. 45:15063-15075 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2020.03.220 |
| Popis: | Electrochemical hydrogen evolution reaction (HER) via the splitting of water has required electrocatalysts with cost-effectiveness, environmentally friendliness, high catalytic activity, and superior stability to meet the hydrogen economy in future. In this context, we report the successful synthesis of self-standing mesoporous Ni2P–MoP2 nanorod arrays on nickel foam (Ni2P–MoP2 NRs/3D-NF) through an effective phosphidization of the corresponding NiMoO4 NRs/3D-NF. The as-synthesis Ni2P–MoP2 NRs/3D-NF, as an efficient HER electrocatalyst, exhibits small overpotential of 82.2 and 124.7 mV to reach current density of 10 and 50 mA cm−2, a low Tafel slope of 52.9 mV dec−1 and it retains its catalytic performance for at least 20 h in alkaline condition. Our work also offers a new strategy in designing and using transition metal phosphide-based 3D nanoarrays catalysts with enhanced catalytic efficiency for mass production of hydrogen fuels. |
| Databáze: | OpenAIRE |
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