CD Skripsi
Fabrikasi Elektroda Karbon Dari Biomassa Pelepah Sagu Dengan Variasi Aktivator Kimia Untuk Aplikasi Sel Superkapasitor
Activated carbon with high porosity and controlled pores structure are widely applied
as supercapacitor electrodes biomass that derived from sago midrib (PS). Activated
carbon based on sago midrib without chemical agent and using chemical agent ZnCl2
and NaOH by a concentration 0,5 M has been fabricated with a purpose to produce
distribution of mesopores and micropores. Samples were carbonized at temperature
600 using N2 gas followed by physical activation process using CO2 gas at
temperature of 700 . The physical properties of activated carbon electrodes were
analyzed by using Thermography Analysis (TGA), Density Measurement, X-Ray
Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-Ray
(EDX). The electrochemical properties of activated carbon electrode were analyzed
using Cyclic Voltammetry (CV). Thermogravimetry shows that thermal resistance
temperature of carbon powder is 300 . The density value of each carbon electrode
for PS-TA, PS-ZnCl2 and PS-NaOH is 0,696 g.cm-3, 0,527 g.cm-3, 0,784 g.cm-3,
respectively. Microstructure analysis shows that amorphous structure for the activated
carbon electrodes is shown by the presence of the peaks of 2θ around 240 and 440
with the highest Lc presented by ZnCl2. SEM characterization showed the domination
of mesopores and a few of micropores presented by ZnCl2. EDX characterization
showed the highest atomic carbon percentage is 90,27%. Specific capacitance was
determined by cyclic voltammetry method and found to be as high as 60 F/g, 138 F/g,
111 F/g for PS-TA, PS-ZnCl2 and PS-NaOH. The result from the physical and
chemical properties, ZnCl2 is the best chemical agent from biomass-derived sago
midrib for the best performance of supercapacitor. Sago midrib is the first biomass
reported as a raw material for the fabrication of carbon electrodes for supercapacitor
cell application.
Keywords : Sago Midrib, Activated Carbon, Chemical Activating Agent,
Supercapacitor.
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