Contrary to positive electrodes such as NMC and LFP, the ionic resistance in pores progressively decreases when calendering. Here, we observed the lowest ionic resistance corresponding to a specific or range of calendered percentages for the Si8% and Si15% contents, respectively. The ion resistances are the maximum for the electrode calendered at 30% for both formulations. In comparison, the calendar percentage does not change the ion resistance significantly for the Si15% formulation. The lowest ion resistance is achieved when calendering 20% of the Si8%/Gr83% electrode.