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AUTHOR(S): V.S. Protsenko, L.S. Bobrova, T.E. Butyrina, F.I. Danilov
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ABSTRACT The concept of using hydrogen as a reliable solution to the problems of planetary warming and pollution requires the development of high-performance and sustainable methods of H2 production. The electrolysis of water seems to be a very promising approach to the hydrogen synthesis. In this context, there is an urgent need to create efficient, inexpensive and environmentally friendly electrocatalysts for the hydrogen evolution reaction. In this study, chromium-based coatings as a heterogeneous electrocatalyst for the hydrogen evolution process were electrodeposited from a trivalent chromium plating bath based on a deep eutectic solvent (a green and available analogue of room temperature ionic liquids). The plating bath contained a liquid mixture of chromium (III) chloride, choline chloride and extra water. The fabricated coatings were tested as electrocatalysts towards the hydrogen evolution reaction in an acidic medium (0.5 M H2SO4). The results of linear voltammetry and electrochemical impedance spectroscopy showed that the electrocatalytic activity of deposits fabricated from choline chloride-based bath towards the hydrogen evolution reaction is higher than that of Cr coatings deposited from common industrial hexavalent chromium plating bath |
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KEYWORDS Hydrogen production, electrocatalysis, electrodeposition, coatings, trivalent chromium, deep eutectic solvent |
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Cite this paper V.S. Protsenko, L.S. Bobrova, T.E. Butyrina, F.I. Danilov. (2019) Hydrogen Production Using an Electrocatalyst Fabricated from Environmentally Safe Chromium Plating Bath based on a Deep Eutectic Solvent. International Journal of Environmental Science, 4, 132-137 |
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