Electrode optimisation for carbon power supercapacitors

The purpose of this work was to economically prepare large electrodes (32 cm2) in order to assemble mono-cell supercapacitors (100 cm3) of 250 F and to reach powers in the range of 120–130 W (2 V/cell) with the structure selected. We have reached more than 20 F/cm3 of electrode, with a time constant of a few seconds (close to 2 s) and reached powers compatible with starting applications.