In this study, the charge/discharge cycling behaviour of the Ce3+/Ce4+ redox couple in methanesulfonic acid medium on various Pt and Pt-Ir coated titania based substrates was investigated as a function of solution flow rate, temperature and charge/discharge current density using a rotating disk electrode. Although superior performances (in terms of the voltage efficiency, η V) were obtained from the electrodes containing higher amounts of platinum, a deterioration of these electrodes with cycling was evident (after 150 cycles). At rotation rates between 600rpm and 1200rpm, high η V (>90%) could be obtained as long as the current density j applied was below the mass transport limiting current density, j L. For j's above this value, the oxygen evolution reaction occurred with Ce3+ oxidation whereas the Ce4+ reduction was accompanied by oxygen reduction, resulting in lowered η V's. Better stability towards cycling and higher η V's were observed at 60°C compared to 25°C, especially for the etched Pt electrodes. The optimum loading for the Pt substrates was 3gm−2 while for the case of the heat treated samples 10gm−2 of Pt.