EFEK VARIASI RASIO MASSA KOH TERHADAP DENSITAS DAN KAPASITANSI SPESIFIK SUPERKAPASITOR BERBASIS KARBON AKTIF SERBUK GERGAJI KAYU KARET

Abstract

Supercapacitor electrode material of Rubber Wood Saw Dust (RWSD) was fabricated by using an experimental method with variation RWSD and KOH mass ratio of 1:1, 1:3, 1:5 and 1:7. The RWSD was carbonized using N2 gas at a temperature of 600 °C for ± 8 hours to produce pellets with high carbon content. Carbon activation process was done by a combination of physical and chemical activation. Physical activation using CO2 gas was performed at temperature of 900 °C for 2 hours while the chemical activation was low temperature of 80 °C for 2 hours in a solution of KOH. Results of density measurements indicated that the value of the carbon electrode density increased with increasing mass of KOH. The measurement of specific capacitance showed that the specific capacitance of the electrode increased with increasing mass ratio of KOH and reached the higest value at the mass ratio of 1:5, this is due to the activation of KOH caused the particle size become smaller and porous, The best sampel in fil reserch was 1:5 sampel being pesifik capacitance an high of 72,82 F/g