Abstract
Abstract The electrochemical behavior of ferrocene (Fc) and ferricenium (Fc + ) was investigated by cyclic voltammetry with convolutional and semi-differential electroanalyses in the temperature range 298–373 K in the hydrophobic room temperature ionic liquid systems consisting of bis(trifluoromethanesulfone)imide anion with quaternary ammonium cation. The experimental results indicated that the redox reaction of Fc/Fc + was reversible in this ionic liquid and the charge-transfer rate constant ( k 0 ) has been obtained. Mass transport towards the electrode is a simple diffusion process and the diffusion coefficient ( D ) for Fc/Fc + has been also calculated. These results indicated that the k 0 and D increased with increasing temperature in ionic liquids. The validity of the Arrhenius law was verified by investigating the temperature dependences of k 0 and D .
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