Abstract:
Fibers of oil palm empty fruit bunches were used to produce self-adhesive carbon grains (SACG). The SACG
green monoliths were carbonized in N2 environment at 800°C to produce carbon monoliths (CM) and the CM was CO2
activated at 800°C for 4 hour to produce activated carbon monolith electrodes (ACM). The physical properties of the
CMs and ACMs were investigated using X-ray diffraction, field emission scanning electron microscopy and nitrogen
adsorption-desorption. ACMs were used as electrode to fabricate symmetry supercapacitor cells and the cells which used
H2SO4 electrolyte at 0.5, 1.0 and 1.5 M were investigated using electrochemical impedance spectroscopy, cyclic
voltammetry and galvanostatic charge-discharge standard techniques. In this paper we report the physical properties of
the ACM electrodes and the effect of electrolyte concentration on the electrochemical properties the ACM electrodes
