Iron, manganese co-doped Ni3S2 nanoflowers in situ assembled by ultrathin nanosheets as a robust electrocatalyst for oxygen evolution reaction
| Autor: | Jiu-Ju Feng, Lu Zhang, Ai-Jun Wang, Zhu Han, Qian-Li Zhang, Ru-Lan Zhang, Jiao-Jiao Duan |
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| Rok vydání: | 2021 |
| Předmět: |
Tafel equation
Materials science Oxygen evolution chemistry.chemical_element 02 engineering and technology Manganese Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology Electrocatalyst 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalysis Biomaterials Colloid and Surface Chemistry Transition metal chemistry Chemical engineering Water splitting 0210 nano-technology |
| Zdroj: | Journal of Colloid and Interface Science. 588:248-256 |
| ISSN: | 0021-9797 |
| Popis: | Exploring high-performance and stable transition metal electrocatalysts is prerequisite for boosting overall water splitting efficiency. In this study, iron (Fe), manganese (Mn) co-doped three-dimensional (3D) Ni3S2 nanoflowers were in situ assembled by many inter-connected 2D nanosheets on nickel foam (NF) via hydrothermal and sulfuration treatment. By virtue of the introduced Fe and Mn elements and unique flower-like structures, the as-prepared catalyst displayed high activity and stability for oxygen evolution reaction (OER), coupled with a small Tafel slope (63.29 mV dec−1) and a low overpotential of 216 mV to reach the current density of 30 mA cm−2. This study would shed some lights for facile synthesis of exceptional OER catalyst by tailoring the electronic structure and doping transition metal(s). |
| Databáze: | OpenAIRE |
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