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Electrochemical and Transport Properties of Ethaline Containing Copper and Tin Chloride

Lookup NU author(s): swati Ghosh, Professor Sudipta Roy

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Abstract

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.

Publication metadata

Author(s): Ghosh S, Ryder KS, Roy S

Publication type: Article

Publication status: Published

Journal: Transactions of the IMF

Year: 2014

Volume: 92

Issue: 1

Pages: 41-46

Print publication date: 01/01/2014

ISSN (print): 0020-2967

ISSN (electronic): 1745-9192

Publisher: Maney Publishing

URL: http://dx.doi.org/10.1179/0020296713Z.000000000133

DOI: 10.1179/0020296713Z.000000000133

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