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Anodic dissolution of metals in ionic liquids

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journal contribution
posted on 14.09.2016, 14:16 by Andrew P. Abbott, Gero Frisch, Jennifer Hartley, Wrya O. Karim, Karl S. Ryder
The anodic dissolution of metals is an important topic for battery design, material finishing and metal digestion. Ionic liquids are being used in all of these areas but the research on the anodic dissolution is relatively few in these media. This study investigates the behaviour of 9 metals in an ionic liquid [C4mim][Cl] and a deep eutectic solvent, Ethaline, which is a 1:2 mol ratio mixture of choline chloride and ethylene glycol. It is shown that for the majority of metals studied a quasi-passivation of the metal surface occurs, primarily due to the formation of insoluble films on the electrode surface. The behaviour of most metals is different in [C4mim][Cl] to that in Ethaline due in part to the differences in viscosity. The formation of passivating salt films can be decreased with stirring or by increasing the electrolyte temperature, thereby increasing ligand transport to the electrode surface.

History

Citation

Progress in Natural Science: Materials International, 2015, 25 (6), pp. 595-602

Author affiliation

/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Chemistry

Version

VoR (Version of Record)

Published in

Progress in Natural Science: Materials International

Publisher

Elsevier

issn

1002-0071

Copyright date

2015

Available date

14/09/2016

Publisher version

http://www.sciencedirect.com/science/article/pii/S1002007115001239

Language

en