The kinetics of the Zn II electroreduction has been studied in H 2 O, H 2 O methanol (MeOH), H 2 O dimethylsulfoxide (DMSO) mixtures as well as in these solutions with an addition of thiourea (TU) as a function of temperature. The diffusion coef®cients, the formal potentials and the standard rate constants have been determined. These measurements made it possible to obtain the real activation energy of the electrode process. The presence of TU decreased the values of the real energy of activation of the electrode process in all the investigated solutions.
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