CD Skripsi
Kinerja Karbon Aktif Berbasis Limbah Sabut Kelapa Muda (Cocofiber) Sebagai Elektroda Superkapasitor Berdasarkan Separator
Supercapacitor is an energy storage device with electrochemical characteristic that
can provide high energy and power density. The supercapacitor cell consists of a
current collector, electrode, electrolyte and separator. This study used young
coconut fiber biomass as a supercapacitor electrode, H2SO4 as an electrolyte,
316L stainless steel as a current collector and used mask as a separator. This study
was conducted to determine the effect of the separator on the performance of the
supercapacitor with carbon electrodes from young cocofiber. The fabrication of
electrode carbon made from young cocofiber begins with the pre-carbonization
process, chemical activation using 0,5M KOH, carbonization process using N2 gas
at a temperature of 600˚C and physical activation using CO2 gas at a temperature
of 750˚C. The separator used in this study was layer 2 of used mask with different
brands, that is MSF, MSS, and MDS. Mass decreased after pre-carbonization by
28,66% and produced carbon powder. The electrode density before carbonizationactivation
is 1,1119 g/cm3 and after carbonization-activation is 0,8438 g/cm3 with
a decreased density percentage of 24,11%. The X-ray diffraction pattern shows
that activated carbon made from young cocofiber is semicrystalline which is
characterized by the presence of broad peaks at 2 around 23,55˚ and 45,86˚.
Functional groups on activated carbon of young cocofiber indicate the presence of
functional group –OH, C-H alkana, =O carbonyl, C=C alkena, C=C aromatic, C-C
alkana. Analysis of electrochemical characteristic showed that the supercapacitor
with MSF separator produced a specific capacitance of 197,48 F/g, MSS separator
produced a specific capacitance of 186,61 F/g, and MDS separator produced a
specific capacitance of 160,58 F/g.
Keywords: Young Cocofiber, Activated Carbon, Used Mask, Separator,
Supercapacitors, Electrodes.
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