Table shows the resulted electrode properties. As expected, the porosity decreases when decreasing the calendered gap with initial porosities of 59 ± 3% and 56 ± 1%, for 8%Si/83%Gr and 15%Si/76%Gr, respectively, following precedent studies where the Si/Gr blends present a porosity between 50-70%. We will evaluate the impact of these porosities on the electrode properties since it is known that the volume changes when silicon-based materials are cycled. Consequently, finding an adequate compromise between the porosity is necessary, while volume expansion can be accommodated and ensure a satisfactory Si cycling process. The formulation with Si 8% appears to have an increased porosity due to the lower content of Si, leaving more free space among the Gr grains than the formulation with Si 15%. In other words, the electrode surface in the Si15%/Gr76% formulation seems to be better exploited, filled by the Si Nps.