Bivariant mechanical tuning of porous carbon electrodes for high-power and high-energy supercapacitors

Abstract

Porous electrodes of an activated carbon material have been modified by bivariant mechanical tuning (optimization of electrode density and thickness). Features of this method have been described in detail; the electrochemical behavior of porous carbon electrodes of varying density (0.35, 0.55, and 0.75 g/cm3) in a wide thickness range (60–1400 μm) has been studied. In addition, the possibility of using the modified electrodes in high-power symmetric and high-energy asymmetric supercapacitors has been analyzed; an additional criterion for the selection of the electrodes for the supercapacitors has been proposed.