Effect of iron on Ni–Mo–Fe composite as a low-cost bifunctional electrocatalyst for overall water splitting
| Autor: | Saman Jafari, Farnaz Nasri, Ramin Badrnezhad, Hamed Pourfarzad |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Hydrogen Renewable Energy Sustainability and the Environment Alkaline water electrolysis 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 chemistry.chemical_compound Fuel Technology Chemical engineering chemistry Electrode Water splitting 0210 nano-technology Bifunctional |
| Zdroj: | International Journal of Hydrogen Energy. 46:3821-3832 |
| ISSN: | 0360-3199 |
| Popis: | By increasing demand for hydrogen and oxygen gas for energy and industrial applications, designing a cheap, high-efficiency, and bifunctional electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) seems necessary. For this purpose Ni–Mo–Fe as a bifunctional electrocatalyst was synthesized by one-step electrodeposition. From this electrocatalyst with optimal composition and current density, a small overpotential of 65, 161 mV for delivering 10, 100 mA/cm2 on HER in alkaline media was achieved. As-fabricated electrode exhibited 344,408 mV for delivering 10, 100 mA/cm2 in OER. Furthermore, this electrocatalyst shows high stability and negligible degradation in overpotential for HER and OER under long term stability tests in alkaline media. The notable function of As-fabricated Ni–Mo–Fe is due to the synergism effect between Ni, Mo, and Fe element and binder-free structure. Owing to the high-performance and high-stability of Ni–Mo–Fe electrocatalyst under Hydrogen and Oxygen evolution reactions is a candidate for industrial uses in the alkaline electrolyzer. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect