Probability of thermal runaway in high-capacity nickel-cadmium batteries with pocket electrodes

Abstract An experimental investigation was given to the occurrence probability of the thermal runaway in the high-capacity nickel-cadmium batteries with the pocket electrodes. 800 charge-discharge cycles were performed using a hard charge mode at a voltage of 2.2 V and a temperature of 40 ° C. It was shown that in the batteries of this kind, the thermal runaway is either impossible or its probability is much lower than that in the batteries with the sintered electrodes. The explanation was given to this phenomenon based on the previously proposed thermal runaway mechanism based on the exothermic reaction of the thermal runaway.