Effect of iron on Ni–Mo–Fe composite as a low-cost bifunctional electrocatalyst for overall water splitting |
| |
Authors: | Ramin Badrnezhad Farnaz Nasri Hamed Pourfarzad Saman Khadem Jafari |
| |
Affiliation: | 1. Malek-Ashtar University of Technology, Department of Chemistry and Chemical Engineering, Tehran, 15875-1774, Iran;2. Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, 14155-6455, Iran;3. Tarbiat Modares University, Department of Material Engineering, Tehran, 15875-4416, Iran |
| |
Abstract: | 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. |
| |
Keywords: | Hydrogen evolution reaction Oxygen evolution reaction Nickel–iron-molybdene Alkaline electrolyzer |
本文献已被 ScienceDirect 等数据库收录! |
|