Electrocatalytic Properties of Nickel Foam-Based Ni-Mo, Ni +Mo and Ni+Mo/Ni-Mo Electrodes for Hydrogen Evolution Reaction
| Autor: | Li Min Wang, Qiang Hu, Shao Ming Zhang, Jing Guo Zhang, Shuo Li, Bin Zhang, He Dai |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Mechanical Engineering Inorganic chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Nickel chemistry Mechanics of Materials Composite electrode Plating Electrode General Materials Science Hydrogen evolution 0210 nano-technology |
| Zdroj: | Materials Science Forum. 921:134-140 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.921.134 |
| Popis: | Nickel foam-based Ni-Mo alloy electrodes, Ni+Mo composite electrodes and Ni+Mo/Ni-Mo composite alloy electrodes were prepared by eletrodeposition, and the electrocatalytic characteristics for hydrogen evolution reaction (HER) in 30wt% KOH solution were investigated by cathode polarization curve and electrochemical impedance spectroscopy (EIS). The experimental results show that in comparison with nickel foam electrodes, these electrodes exhibit a lower overpotential, a higher exchange current density and a larger real surface area for HER. At 30°C and current density of 200 mA/cm2, the overpotentials of foam Ni electrodes, nickel foam-based Ni-Mo alloy electrodes, Ni+Mo composite electrodes, Ni+Mo/Ni-Mo electrodes are respectively 506, 252, 336, 202 mV. The nickel foam-based Ni+Mo/Ni-Mo composite alloy electrode had the highest HER electrocatalytic activity. |
| Databáze: | OpenAIRE |
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