Electrode kinetics of the tris (2,2′-bipyridine) complexes of some transition metals have been studied in various ILs. Such kinetic parameters as diffusion coefficients and rate constants were found to be affected not only by the viscosity of ILs but also by the electrostatic interaction between the charged redox species and the ions composing the ILs. The dependence of the reaction entropy on the ILs was also explained partly by the electrostatic interaction. It is important to take the electrostatic interaction into account in order to understand the electrochemical behavior of the charged species in the ILs.
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