The slurries were coated over a 16 µm Al foil using a film coater (MSK-AFA-II-VC) with a fixed blade gap of 150 μm and a coating speed of 0.2 m/min. Previous to the deposition, the rheological properties of the slurry were analyzed with a rheometer (Anton Paar MCR 92). The viscosity vs. shear rate curves are shown in Figure where the viscosity for the used coating speed is displayed as well as the calculations to obtain them. The as-deposited films were immediately dried in a vacuum oven at 60 ºC for 4 hours. To obtain a precise control of the porosity over the selected range (28 %, 38 % and 48 %) the 12 mm round shaped electrodes were punched before calendering and then individually pressed using a prototype-grade lab press calender (BPN250, People & Technology, Korea). The calendering was performed at constant line speed (0.54 m/min) and 60 •C. The porosity calculations were based on the apparent porosity further described elsewhere.