Non-noble metal composite cathodes for hydrogen evolution. Part II: The Ni–MoO2 coatings electrodeposited from nickel chloride–ammonium chloride bath containing MoO2 powder particles
| Autor: | N.V. Krstajić, S. Mora, Vladimir D. Jović, Uroš Lačnjevac, Borka M. Jović |
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| Rok vydání: | 2011 |
| Předmět: |
Morphology
Materials science Composite number Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Electrolyte engineering.material Phase composition 010402 general chemistry 01 natural sciences Chloride law.invention chemistry.chemical_compound Coating law medicine Polarization (electrochemistry) Ni-MoO2 coating H-2 evolution Renewable Energy Sustainability and the Environment Metallurgy 021001 nanoscience & nanotechnology Condensed Matter Physics Cathode 0104 chemical sciences Nickel Fuel Technology Chemical engineering chemistry engineering Ammonium chloride 0210 nano-technology medicine.drug |
| Zdroj: | International Journal of Hydrogen Energy |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2011.02.106 |
| Popis: | In this work the procedure of the deposition of composite Ni–MoO 2 coatings onto Ni mesh from the nickel chloride-ammonium chloride electrolyte containing suspended MoO 2 powder particles, under simulated industrial deposition conditions for commercial cathodes, has been presented. The morphology of the obtained coatings was investigated by SEM, the composition by EDS and the phase composition by XRD techniques. The polarization characteristics for hydrogen evolution on the obtained Ni–MoO 2 coatings were investigated in the 32 wt.% NaOH at 90 °C and compared with the one recorded for the commercial De Nora’s coating (DN). It was shown that the best Ni–MoO 2 coating posses identical polarization characteristics as the commercial one. By the cross section and XRD analysis of deposited samples it was confirmed that MoO 2 powder particles were occluded by the Ni deposit, being uniformly distributed in the deposit. |
| Databáze: | OpenAIRE |
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