The group I alkali metals in ionic liquids: Electrodeposition and determination of their kinetic and thermodynamic properties

Rahmat Wibowo, L. Aldous, S. Ward Jones, R. G. Compton

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Cyclic voltammetric experiments were carried out on Li+, Na +, K+, Rb+ and Cs+ in ionic liquids (ILs). Alloy formation was noted at Pt microelectrodes, but not at Ni. A range of ILs was investigated to identify the best IL to study the M/M+ redox couples, and bulk electrodeposition of all metals was observed in at least one IL, N-butyl-N-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([C4mpyrr] [NTf2]). Mathematical simulation of the CVs in this IL was conducted as a function of temperature. The diffusion coefficients, D, of the five metal ions were determined. The formal potential, E f 0 (vs. Fc/Fc+) of the five M/M+ couples was quantified, as well as the electrochemical rate constants, k 0, and transfer coefficients, α. The activation energies of diffusion, Ea,dif, of Li+ and Na+ ions, and electron transfer, Ea, of Li/Li+ and Na/Na+ were determined, and ΔS0 (vs. Fc/Fc+) estimated for the Na/Na+ couple. The trends within the group are discussed.

Original languageEnglish
Title of host publicationMolten Salts and Ionic Liquids 17
Pages523-535
Number of pages13
Edition7
DOIs
Publication statusPublished - 1 Dec 2010
Event17th International Symposium on Molten Salts and Ionic Liquids - 218th ECS Meeting - Las Vegas, NV, United States
Duration: 10 Oct 201015 Oct 2010

Publication series

NameECS Transactions
Number7
Volume33
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

Conference17th International Symposium on Molten Salts and Ionic Liquids - 218th ECS Meeting
CountryUnited States
CityLas Vegas, NV
Period10/10/1015/10/10

Fingerprint Dive into the research topics of 'The group I alkali metals in ionic liquids: Electrodeposition and determination of their kinetic and thermodynamic properties'. Together they form a unique fingerprint.

  • Cite this

    Wibowo, R., Aldous, L., Ward Jones, S., & Compton, R. G. (2010). The group I alkali metals in ionic liquids: Electrodeposition and determination of their kinetic and thermodynamic properties. In Molten Salts and Ionic Liquids 17 (7 ed., pp. 523-535). (ECS Transactions; Vol. 33, No. 7). https://doi.org/10.1149/1.3484810