Figure presents the lithium concentration profiles for the cycled electrodes' AM at C/50 discharge rate at different cell voltages: 3.9V, 3.65V, and 2.6V, corresponding to the beginning, middle, and end of discharge, respectively. Notably, the cathode with a higher degree of calendering exhibits a relatively uniform AM utilization across the entire composite cathode (Figure ). In contrast, the uncalendared electrode in Figure displays localized lithiation, which is due to a reduced number of percolating pathways. This observation is consistent with the calculated ion-flux distributions for Cal0%, Cal20%, and Cal35% at the end of discharge, as illustrated in Figure , which reveal more pronounced regions of high ionic current density. These results indicate that increased bottlenecks (i.e. localized regions where ion or electron movement is significantly restricted) impede ion flow in the uncalendered electrode. These heterogeneities, such as bottlenecks or reaction current localization, affect the overall efficiency of Li-ion (de)intercalation .