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Lookup NU author(s): swati Ghosh,
Professor Sudipta Roy
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Electrochemical and transport properties were measured for hydrated chloride salts of copper and tin in ethaline, which is a 1:2 ratio of choline chloride and ethylene glycol. Density, viscosity and conductivity for ethaline melts with different salt concentrations have been measured for temperatures between 293 and 328 K. The change in formal potential with changing metal ion concentration has been determined to evaluate changing speciation in the ionic liquid. Cyclic voltammetry has been carried out to ascertain the reduction potential and diffusion coefficient of the reacting species. For pure ethaline the density was found to decrease by < 5% with increase in temperature. On the other hand, the viscosity was found to decrease and conductivity was found to increase by 65% over the same temperature range. The inclusion of metal salts in ethaline had negligible effect on these parameters. Potential measurements showed that copper was reduced through a two step mechanism and Sn was reduced via a two electron transfer route. The diffusion co-efficient values for Cu2+ and Sn2+ species were 1.22 x10-11 m2 s-1 and 1.96 x10-11 m2 s-1, respectively.
Author(s): Ghosh S, Ryder KS, Roy S
Publication type: Article
Publication status: Published
Journal: Transactions of the IMF
Print publication date: 01/01/2014
ISSN (print): 0020-2967
ISSN (electronic): 1745-9192
Publisher: Maney Publishing
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