Abstract:
The carbon electrode from avocado seed biomass material has been successfully
made. The manufacture of carbon electrodes begins with sample preparation, precarbonization
processes, crushing using a mortar and ball milling, sieving carbon
powder with a size of 53 μm. The pre-carbonized powder is chemically activated
using a KOH 0.1 M activator and continued by pellet forming by using Hydraulic
Press. The carbonization process is carried out at a temperature of 600˚C using N2 gas
and physical activation with temperature variations, namely 700˚C, 800˚C and 900˚C
using CO2 gas. The Shrinkage of carbon mass was 24,07% and resulted in carbon
powder. The shrinkage density values of each carbon electrode for physical activation
temperatures of 700˚C, 800˚C, and 900˚C were 25,52%, 27,56%, and 37,42%.The
highest density shrinkage value occurred at a temperature of 900 at 31.76%.
