A straightforward method that allows a quick estimation is to compare directly the tortuosity factors themselves between the simulations and experiments. It should be noted that there is a set of assumptions in the determination of each of these two values and therefore results will vary accordingly. However, some of the assumptions are the same for both approaches, making comparison appropriate. Figure shows the experimental results for the electrodes composed of 90 % and 92 % AM according to the treatment presented in the previous subsection along with some of the results from simulations. The results for 95 % AM were not considered due to their high contact resistance. In these plots, the experimental results approximate those of the simulations for 50 % and 60 % internal CBD porosity. Therefore, it can be said that the straightforward comparison method yields a 50-60 % value for the internal porosity of the CBD in the electrodes prepared through the manufacturing method of choice.