Effect of Layered Electrode on Internal Short Circuit Behaviour of Li-ion Battery

The current work describes the effect of layered electrodes on the internal short circuit (ISC) behaviour of lithium-ion batteries. A pseudo-two-dimensional cell model is employed to numerically investigate the effect of layered electrodes on ISC behaviour. A comparative evaluation of the battery with the different configurations of layered electrode and C-rate is discussed. The results reveal that the two-layered anode exhibits superior voltage stability, capacity retention, and lower resistance, particularly at high C-rates among all the configurations of electrode structure considered. Furthermore, the electrolyte potential distribution indicates lower internal resistance and improved ionic conductivity. Also, the electrolyte concentration profile is more uniform when layered electrodes are employed, suggesting enhanced lithium transport. Notably, the lithium concentration at particle surface distributions demonstrates more favourable lithium utilisation for the layered electrode. These findings highlight the effectiveness of layered electrode designs in enhancing lithium transport dynamics and mitigating the effects of ISC, providing critical insights for developing high-performance Li-ion batteries.