Additionally, one could wonder if the heterogeneities developed along the drying step is kept along the next manufacturing steps (or not) and to which degree. Therefore, the 4 electrode mesostructures discussed above were compressed (mimicking the calendaring step) by reducing their thickness of 25%, reaching a bulk and overall porosities of 0.243±0.006 and 0.324±0.005, respectively. Figure shows a schematic of how the electrode mesostructures evolve during compression (A), and the phases evolution of the calendered electrodes along their thickness (B).