Structure of Ionic Liquids at the Electrode/Solution Interfaces
Electrochemical and thermal stability of ionic liquids make them perfect candidates as solvents and electrolytes for batteries, electrodeposition, lubrication and corrosion inhibition. Further development in these fields is tightly coupled with understanding solid/liquid interface phenomena. Ionic liquids composed of imidazolium cations and bromide are reported to have corrosion inhibition effect on different metals through the formation of a protective layer on the metallic surface. Better corrosion inhibition is observed for longer alkyl chains. Increasing the alkyl chain length is also shown to be beneficial for Li-ion batteries and lubrication. For the present proposal, MD simulations were performed in order to investigate IL layers formed at the metallic surface as a function of the electrical potential of the substrate. The corresponding expected reflectivity curves were calculated. As result of those simulations, we propose to use specular NR measurements to detect and characterize the layering of ionic liquids in proximity of a substrate. Our MD simulations indicate that a detectable difference in reflectivity is expected at Qz <0.3 Å-1
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ZEC Nebojsa; Sebastian Busch; GUTFREUND Philipp; Armando Maestro; MANGIAPIA Gaetano; MOULIN Jean-Francois and MOULIN Jean Francois. (2021). Structure of Ionic Liquids at the Electrode/Solution Interfaces. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.1-04-236
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