High-surface-area activated carbon from pine cones for semi-industrial spray deposition of supercapacitor electrodes
Andreas Nordenström, Nicolas Boulanger, Artem Iakunkov, Li Gui, Roman Mysyk, Gaëtan Bracciale, Paolo Bondavalli, Alexandr V. Talyzin
Abstract
. It is found that the same KOH activation procedure applied to reduced graphene oxide (rGO) and pine cone derived biochars results in carbon materials with a similar surface area, pore size distribution and performance in supercapacitor (SC) electrodes. It can be argued that "activated graphene" and activated carbon are essentially the same kind of material with a porous 3D structure. It is demonstrated that the pine cone derived activated carbon (PC-AC) can be used as a main part of aqueous dispersions stabilized by graphene oxide for spray deposition of electrodes. The PC-AC based electrodes prepared using a semi-industrial spray gun machine and laboratory scale blade deposition of these dispersions were compared to pellet electrodes.