One-step preparation of Fe-doped Ni3S2/rGO@NF electrode and its superior OER performances |
| |
| Affiliation: | 1. Key Laboratory of Polymer Material Advanced Manufacturings Technology of Shandong Provincial, College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, PR China;2. College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, PR China;3. State Key Laboratory Base of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, Shandong, PR China;4. Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, Qingdao University of Science and Technology, Qingdao 266042, Shandong, PR China |
| |
| Abstract: | In order to improve the OER performance, Ni3S2-based catalysts were directly grown on Ni substrate by simultaneously doping of Fe and compositing with reduced graphene oxide (rGO). Synthesis and loading of Ni3S2/rGO were completed during a one-step hydrothermal process, in which Ni foam acted as support and Ni source of Ni3S2, as well as the subsequent current collector. It is found that either GO or Fe salt tuned Ni3S2 nanosheets into thinner and smaller interconnected nanosheets anchored on rGO, which enhanced the charge transfer resistance and improved the active sites. Hence, as-synthesized Fe-doped Ni3S2/rGO composite at 120 °C (Fe-2-Ni3S2/rGO@NF-120) exhibited an enhancement on OER performances: An overpotential of 247 mV at 20 mA cm−2, and a small Tafel slope of 63 mV dec−1, as well as an excellent stability of: 20 h maintaining at 20 mA cm−2 or 50 mA cm−2. |
| |
| Keywords: | Reduced graphene oxide (rGO) OER Hydrothermal Fe-doping |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
