As stated in the introduction, the aim of this paper is to introduce a method for obtaining the value of the CBD internal porosity. This results section develops the workflow required to carry out this method. In order to serve as a guide for the reader, panel A in Figure First, the simulated microstructures were generated using the size distributions from the experimental electrodes as described in the methods section. the CBD becomes more porous, less dense, and takes a larger fraction of the available space, the electrode tortuosity factor decreases. In other words, a very extended but very permeable CBD is more favorable for the diffusion of species than an impermeable but very localized CBD. Another conclusion is that this effect is much more impactful in electrodes with lower porosity, for which τ is higher in every case, but varies to a larger degree, from 5.5 to 2.0. This effect anticipates that the determination of CBD internal porosity will be more precise in low porosity electrodes and after calendering. Additionally, these results highlight the importance of an accurate determination of the CBD internal porosity, as its variation has a very significant effect on the tortuosity factor, which in turn is very impactful on transport properties and kinetics. (corresponding to an increase in compression degree). This agrees with the prediction from equation ( ) and its generalized form equation . The irregular intervals between the assessed porosities in these plots are a result of the target values of porosity in the experiments: around 28 %, 38 %, and 48 % and the experimental deviation.