PEMANFAATAN AMPAS SAGU SEBAGAI ELEKTRODA KARBON SUPERKAPASITOR

Abstract

Research on the manufacture of sago based activated carbon as a supercapacitor electrode has
been successfully performed. The first stage of activated carbon production was started by
drying the waste of dregs sago under sunlight and followed by an oven drying, precarbonization,
milling, sieving, chemical activation with KOH solution of concentration 0,2
M, pellet printing, carbonization at 600 °C followed by physics activation at temperature of
850 °C and pellet polishing. The sample was dried in the oven was carried out at 110 °C and
pre-carbonization was carried out at a temperature of 100 °C to 250 °C for 2 hours. The
samples were ground using mortar and ball milling. The 0,2 M KOH activator was used to
increase the surface area of the electrode. Physical activation using H2O for 1,5 hours.
Characterization of physical properties was done by measurement of density, thermal stability
(TGA) and SEM and the electrochemical properties were performed by a cyclic voltammetric
method with a various scan rate of 1, 2 and 5 mV/s. The optimum specific capacitance result
of sago based activated carbon for a supercapacitor was found at a 1 mV/s scan as high as
74,85 F/g.