CD Skripsi
Elektroda Karbon Dari Biomassa Kulit Salak Pondoh Dengan Variasi Aktivator Kimia Untuk Aplikasi Sel Superkapasitor
Supercapacitor is a renewable energy storage device that has a very large power
density and charge storage capacity. The main components of a supercapacitor are
electrodes, electrolyte, current collector and separator. In this research, carbon
electrodes were made from shell biomass of salak pondoh with various chemical
activators with respective sample codes, namely KS-ZnCl2, KS-KOH and KSNaOH.
The manufacture of carbon electrodes was carried out by several
processes, namely pre-carbonization, chemical activation with the activating
agents used are KOH, NaOH and ZnCl2 with a concentration of 0.5 M, the
carbonization process using N2 gas at a temperature of 600○C and physical
activation using CO2 gas at a temperature of 800○C. The highest density shrinkage
value is found at the carbon electrode in the KS-KOH sample with a mass loss
percentage value of 34.52%. Microstructure analysis shows that the carbon
electrode is amorphous as indicated by the presence of a sloping peak at an angle
of 2θ around 24○ and 44○, where the highest Lc value was produced by the KSKOH
sample, which was 11,691 nm. SEM characterization shows the dominance
of mesopores and some macropores in the KS-KOH sample. The EDX
characterization shows the best combination of carbon and oxygen content,
namely the KS-KOH sample. The functional group analysis of the KS-ZnCl2, KSKOH
and KS-NaOH samples shows the presence of C=C, C=O, C-H and O-H
functional groups. The highest specific capacitance using cyclic voltametry and
galvanostatic charge discharge methods in the KS-KOH sample were 223.96 Fg-1
and 183.17 Fg-1. Respectively This research concluded that KOH is the optimum
activating agent for the best performance of the supercapacitor from the shell
biomass of salak pondoh.
Keywords: activating agent, carbon electrode, salak pondoh shell, supercapacitor.
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