Ternary metal sulfides MoCoNiS derived from metal organic frameworks for efficient oxygen evolution
| Autor: | Tian-Shu Chen, Yong-Ming Chai, Jun-Feng Qin, Bin Dong, Jun Nan, Sa Hou, Xin-Lei Yang, Ya-Nan Zhou, Xue Ma, Min Yang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Oxygen evolution Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrocatalyst 01 natural sciences 0104 chemical sciences Metal Nickel Fuel Technology Chemical engineering Transition metal chemistry visual_art visual_art.visual_art_medium Metal-organic framework 0210 nano-technology Ternary operation |
| Zdroj: | International Journal of Hydrogen Energy. 45:2745-2753 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2019.11.156 |
| Popis: | Developing a highly active and low-cost non-precious metal electrocatalyst for oxygen evolution has been urgent for the clean energy system. Herein, the ternary metal sulfides MoCoNiS supported on nickel foam (MoCoNiS/NF) are successfully prepared using Mo doping Co-based metal-organic framework (Co-MOF) as precursor, which may be helpful for the good dispersion of different metal element. The uniform elements distribution of Mo, Co and Ni on MoCoNiS/NF is determined by all kinds of physical characterization. Mo doping may regulate the electronic environment around Co and Ni, suggesting the potential synergistic effects between different heteroatoms. Electrochemical test shows that MoCoNiS/NF exhibits the excellent OER activity than other single metal or binary metal sulfides as comparison samples, needing only 151 and 226 mV overpotential to achieve current density of 10 (η10 = 151 mV) and 100 mA cm−2 (η100 = 226 mV), respectively. The excellent stability of MoCoNiS/NF has been achieved. The remarkable OER performance of MoCoNiS/NF may due to the synergistic effects and good electrical conductivity as well as the three-dimensional structure of NF as substrate. Therefore, the rational design of MOF derived multi transition metal-based electrocatalysts will be an effective way for increasing OER performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect