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A Comparative Study Of Zn-Mn Electrodeposition From Deep Eutectic Solvents And Aqueous Electrolytes, Jelena Bajat, Mihael Bucko, David Culliton, Tony Betts
A Comparative Study Of Zn-Mn Electrodeposition From Deep Eutectic Solvents And Aqueous Electrolytes, Jelena Bajat, Mihael Bucko, David Culliton, Tony Betts
Conference Papers
The production of Zn-Mn coatings with high Mn and low oxygen content from additive free choline chloride/urea deep eutectic solvent (DES) is reported in this work. Alloy coatings containing high Mn contents (~30 at.% Mn) show the highest corrosion resistance amongst zinc alloys [1]. However, in order to obtain Mn-rich deposits on steel from a simple aqueous bath, a significant cathodic polarization or high deposition current density is necessary. Under such conditions, the Zn 2+ reduction reaction is under diffusion control, leading to the formation and growth of dendrites. In addition intensive hydrogen evolution significantly reduces the current efficiency, often …