Puspita, Sintya Dewi2022-01-192022-01-192021-07wahyu sari yenihttps://repository.unri.ac.id/handle/123456789/10430Supercapacitor electrodes made from Palm fiber were prepared by carbonization and activation process which consist of several steps such as pre-carbonization, milling,sieving, chemical activation, pelletization, and carbonization-physical activation. Chemical activation was performed using potassium hydroxide (KOH). KOH concentration on the activation process of palm fiber charcoal varied as much as 0,2 M, 0,3 M and 0,4 M. The activated carbon was made through the pre-carbonization using an electric oven at temperature of 100-250 0C. The carbonization process was conducted in N2 gas environment at 600 0C and followed by physical activation at a temperatur of 700 0 C using CO2 gas for 1 h. The physical property of electrodes analyzed is its density. The electrochemical properties of the electrodes were explored using a two-electrode system while the capacitive properties of the electrodes was determined using cyclic voltammetry. The electrochemical properties of the electrodes showed excellent capacitive properties of a supercapacitor cell, with very high specific capacitance of 162,99 F/g.enpalm fiberpotassium hydroxideactivated carbonsupercapacitorArticle