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New insight into indium electrochemistry in a Tf2N-based room-temperature ionic liquid

Abstract : The electrodeposition of indium is reported in anew weakly hygroscopic piperidinium-based ionic liquid (1-butyl-1-ethyl-piperidinium bis(trifluoromethylsulfonyl)imide) that allows electrodeposition to be performed without a glove box. The electrochemistry of indium is thoroughly investigated and the drawbacks of using metal chloride precursors in Tf2N-based electrolytes are highlighted using cyclic voltammetry and stripping experiments. Voltammograms revealed complex electrochemical behaviour and several cathodic and anodic signals that could be attributed to the formation of indium chloro complexes during the scan, due to changes in the concentration ratio [Cl−]/[In(III)] of interfacial species during the In(III) reduction reaction. A procedure for the electrodeposition of indium avoiding the use of the indium chloride precursor is then proposed. It offers an improved morphology of the electrodeposit and an increase in faradic yield from 33% to 85% compared to chloride-containing RTILs.
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https://hal.archives-ouvertes.fr/hal-00708517
Contributor : Géraldine Monnet <>
Submitted on : Friday, June 15, 2012 - 11:32:01 AM
Last modification on : Wednesday, November 20, 2019 - 3:16:49 AM

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  • HAL Id : hal-00708517, version 1

Citation

Youssouf Traore, Sophie Legeai, Sébastien Diliberto, Guilhem Arrachart, S Pellet-Rostaing, et al.. New insight into indium electrochemistry in a Tf2N-based room-temperature ionic liquid. Electrochimica Acta, Elsevier, 2011, 58, pp.532-540. ⟨hal-00708517⟩

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