Electrodeposited Ni on pencil graphite electrode for glycerol electrooxidation in alkaline media
| Autor: | Mouna Nacef, Aissat Fares, Randa Guerfa, Christine Vautrin-Ul, A. M. Affoune, Maxime Pontié, Omar Khelifi, Valérie Bertagna, Meriem Djelaibia, Mohamed Lyamine Chelaghmia |
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| Rok vydání: | 2021 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Chemistry Scanning electron microscope Energy Engineering and Power Technology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry Electrocatalyst 01 natural sciences 0104 chemical sciences Dielectric spectroscopy chemistry.chemical_compound Fuel Technology Electrode Glycerol Methanol Cyclic voltammetry 0210 nano-technology Nuclear chemistry |
| Zdroj: | International Journal of Hydrogen Energy. 46:37670-37678 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2020.07.104 |
| Popis: | In this study, we report the electrocatalytic oxidation of glycerol in alkaline solution onto Ni modified pencil graphite electrodes (Ni/PGEs). Field-emission gun scanning electron microscopy (FEG-SEM) and energy-dispersive X-ray spectroscopy (EDX), as well as cyclic voltammetry (CV) have been used for the clarification of the physicochemical and electrochemical properties of Ni/PGEs. The electrocatalytic performance of Ni/PGEs towards glycerol electrooxidation was investigated using cyclic voltammetry and electrochemical impedance spectroscopy (EIS). Ni/PGE elaborated at pH = 6.92 showed the best performance for glycerol electrooxidation reaction in alkaline media. The direct comparison of glycerol, methanol, and ethanol electrooxidation revealed that glycerol is better than ethanol at 35 and 45 °C with a lower onset potentials and higher current densities. Ni/PGE characteristics surpass other nickel based electrodes and therefore promote its use as glycerol electrocatalyst. |
| Databáze: | OpenAIRE |
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