Electrodeposition of Ni–Co–Sn alloy from choline chloride-based deep eutectic solvent and characterization as cathode for hydrogen evolution in alkaline solution
| Autor: | J. Vijayakumar, S. Anand Kumar, S. Pavithra, Subramanian Mohan, S.R. Suseendiran |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Inorganic chemistry Alloy Energy Engineering and Power Technology chemistry.chemical_element Exchange current density engineering.material Condensed Matter Physics Chloride Deep eutectic solvent Nickel chemistry.chemical_compound Fuel Technology chemistry medicine engineering Cyclic voltammetry Platinum medicine.drug Choline chloride |
| Zdroj: | International Journal of Hydrogen Energy. 38:10208-10214 |
| ISSN: | 0360-3199 |
| Popis: | The electrodeposition of Ni–Co–Sn alloy were carried out at room temperature from the chlorine chloride (ChCl)–ethylene glycol (EG) deep eutectic solvent (DES). For comparison of properties, Ni–Sn and Co–Sn alloys were also deposited using the same solvent. Deposition mechanism, microstructure, and electrochemical properties of the deposits in 1 M KOH solution were investigated. The deposition of Ni, Co, Sn, Ni–Sn, Co–Sn and Ni–Co–Sn on platinum electrode were also studied using cyclic voltammetry. Interestingly, the electrochemical stability of DES is observed to be increased in the presence of Sn2+ ions. The X-ray diffraction (XRD) patterns showed only Ni phases indicating that the other elements get incorporated inside the nickel matrix and the lattice constant have linear relation with Sn content in alloy. The morphologies of Ni–Sn and Ni–Co–Sn alloys were observed to be almost same with fine grains, the XRD studies confirm this. The potentiodynamic polarization measurements showed that the Ni–Co–Sn alloy exhibits the lowest corrosion current density (jcorr), noblest corrosion potential (Ecorr) and highest exchange current density (jc) value than the other two binary alloys, indicating that the ternary alloy is a good candidate for Hydrogen Evolution Reaction (HER). |
| Databáze: | OpenAIRE |
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