Abstract:
Self-adhesive carbon grains (SACG) was prepared from fibers of oil palm empty fruit bunches. The SACG
green monoliths were carbonized in N2 environment at 400, 500, 600 and 700°C to produce carbon monoliths labeled as
CM1, CM2, CM3 and CM4 respectively. The CMs were activated in CO2 surrounding at 800°C for 1 hour to produce
activated carbon monolith electrodes (ACM1, ACM2, ACM3 and ACM4). The physical properties of the CMs and
ACMs were investigated using X-ray diffraction, field emission scanning electron microscopy (FESEM) and N2
adsorption-desorption isotherm techniques. ACMs were used as electrode to fabricate symmetry supercapacitor cells and
the cells’ performances were investigated using electrochemical impedance spectroscopy (EIS), cyclic voltammetry
(CV) and galvanostatic charge-discharge (GCD) standard techniques. In this paper we report the physical and
electrochemical properties of the ACM electrodes by analyzing the influence of the carbonization temperature on these
properties
