Prior to assessing the efficacy of the coatings, the thermal behaviour of an uncoated cell was analysed for a 0.5 C discharge and 2 C charge (Figure ). These conditions were chosen due to fast charging of Li-ion cells being limited by safety concerns associated with temperature increase. During the 0.5 C discharge phase of the cycle the average temperature of the cell increased by 2 °C. On discharge, a moderate increase in temperature of ca. 2 °C is observed with much of the total 14 °C temperature increase occurring during the charge step.