Abstract:
The green monoliths (GMs) were prepared from the mixtures of pre-carbonized fibers of oil palm empty fruit
bunches (or self-adhesive carbon grains (SACG)) and green petroleum coke (GPC) with the mixing ratio of 0, 10, 30, 50
and 70 % GPC, respectively. The GMs were carbonized in N2 environment at 800oC to produce carbon monoliths
(CM00, CM10, CM30, CM50 and CM70). The CMs were CO2 activated at 800oC for 1 hour to produced activated
carbon monolith electrodes (ACM00, ACM10, ACM30, ACM50 and ACM70). For each percentage of GPC, three
duplicate symmetrical supercapacitor cells were fabricated using these activated carbon monolith electrodes
respectively, and the capacitive performance amongst the cells was compared and analyzed in order to observe the
relationship between the capacitive performance and the physical properties (microstructure and porosity) of the ACMs
electrodes containing varying percentage of GPC.
