Anion-cation dual doping: An effective electronic modulation strategy of Ni2P for high-performance oxygen evolution
| Autor: | Linbing Du, Qiang Fang, Yiqiang Sun, Bo Xu, Qingquan Lin, Qi-Sheng Liu, Xiaodong Yang, Yan Fu, Cuncheng Li |
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| Rok vydání: | 2020 |
| Předmět: |
Tafel equation
Materials science Oxygen evolution Energy Engineering and Power Technology 02 engineering and technology Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Catalysis Reaction rate Fuel Technology Chemical engineering Oxidation state Water splitting 0210 nano-technology Energy (miscellaneous) |
| Zdroj: | Journal of Energy Chemistry. 48:116-121 |
| ISSN: | 2095-4956 |
| Popis: | Developing of high-performance and low-cost electrocatalysts is of great significance to reduce the overpotential and accelerated the reaction rate of oxygen evolution in water splitting and related energy conversion applications. Herein, Fe, O-dual doped Ni2P (Fe, O Ni2P) nanoarray is successfully synthesized on carbon cloth demonstrating enhanced electrocatalytic activity and stability for oxygen evolution reaction (OER) under alkaline media. The as-synthesized Fe, O Ni2P nanoarray exhibits obviously improved OER performance with a low overpotential of 210 mV at 10 mA cm−2 current density and a Tafel slope of 48 mV dec−1, as well as long-term durability. The strong coupling interaction induced changes in electronic structure lead to relatively higher oxidation state and stronger oxidation ability of the Fe, O Ni2P nanoarray, together with the high electrochemical surface area and good conductivity contribute to the superior OER performance. This work highlights the anion-cation dual doping strategy may be an effective method for fabrication of catalysts relating to energy conversion applications. |
| Databáze: | OpenAIRE |
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