Abstract:
Supercapacitors are renewable energy storage devices consisting of electrodes,
electrolytes, current collectors, and separators. In this study, carbon electrodes
were made from areca leaf midrib biomass waste with variations by activation
using KOH by various concentrations of 0.1 M, 0.2 M and 0.3 M, with the sample
codes being PDP-01, PDP-02, PDP-03.The fabrication of carbon electrodes was
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 700 ⁰C. The highest
density value is found on the carbon electrode with a sample of PDP-02 with a
mass loss percentage value of 36.34%. Supercapacitor cells PDP-01, PDP-02 and
PDP-03 produced specific capacitance values of 66.90 F/g, 97.98 F/g, and 77.16
F/g. PDP-02 is the best variation in activated carbon electrodes from palm fiber
biomass which can improve the performance of supercapacitor cells.
