KINETICS OF THE OXYGEN-ELECTRODE REACTION IN MOLTEN LI-ANALYSIS OF THE LINEAR SCAN VOLTAMMETRIC CURVES FOR THE 1ST REDUCTION PROCESS AT MONOCRYSTALLINE NIO ELECTRODES(NA CARBONATE EUTECTIC .6. QUANTITATIVE)

A theoretical model is proposed for the linear voltammetric peak '1' o f oxygen reduction in molten Li+Na carbonates, as observed on NiO mono crystalline electrodes and described in Part 5 of this series of paper s. The model assumes the diffusion-controlled reaction O22- + 2e- half arrow right over half arrow left 2O2- and a finite, effective ohmic r esistance of the electrodes. The comparison of the simulation results and experimental data for Au and NiO electrodes confirms that the same reaction can be attributed to the peak in both cases. The model allow s also the ohmic resistance of the electrode to be evaluated from expe rimental data.