Three-phase electrochemistry. Influence of temperature on ion transfer

A study on the influence of temperature and time on ion transfer across the liquid|liquid interface is reported. Three anions of different hydrophobic properties were selected for the examination: ClO4-, NO3- and Cl−. It was found that while the current magnitudes of the oxidation of dmfc in NB in the presence of selected anions in water are very different at room temperature, they become comparable above 45 °C. This finding indicates that the ability of the examined anions to reach significant concentrations in the organic phase, at 45 °C, becomes similar. For the anions of lower affinity to the organic phase (NO3- and Cl−), distinct current oscillations appeared in the recorded experimental voltammograms and amperograms.