Abstract:
Supercapacitors are renewable energy storage devices consisting of electrodes,
electrolytes, current collectors, and separators. Electrodes are one of the most
important components in supercapacitors because they are made of nanoscale
materials that have high surface area and porosity. In this study, carbon electrodes
were made from palm fiber biomass waste with variations in the physical activation
temperature of 650℃, 700℃, and 750℃ with the sample codes being SPP-650, SPP-
700, and SPP-750, respectively. The manufacture of carbon electrodes is carried out
by several processes, namely pre-carbonization process, chemical activation with
KOH activator, carbonization process using N2 gas at a temperature of 600 ⁰C and
physical activation using CO2 gas. Thermal analysis using TGA resulted in mass
reduction at a temperature of 288,9℃ with a maximum speed of 0,903 mg/min. The
highest density value is found on the carbon electrode with a sample of SPP-700 with
a mass loss percentage value of 31,52%. Supercapacitor cells SPP-650, SPP-700, and
SPP-750 produced specific capacitance values of 194,822 F/g, 231,108 F/g, and
167,477 F/g, respectively. The temperature of 700℃ is the best temperature in the
synthesis of activated carbon electrodes from palm fiber biomass which can improve
the performance of supercapacitor cells
