CD Tesis
Elektroda Superkapasitor Dari Bahan Biomassa Biji Kurma Untuk Aplikasi Superkapasitor
This research is the manufacture of supercapacitors from the biomass of date
seeds using a variation of the separator in the production of supercapacitor cells.
This research aims to make supercapacitor electrodes from date seeds biomass.
Activated carbon derived from biomass has become the most competitive
electrode material for supercapacitors due to its renewable and sustainable
nature. Optimization efforts are made for the process of making supercapacitor
cells by varying the separator to obtain a high specific capacitance. Date seed
biomass as the basic material for making carbon electrodes through the drying
process of date seeds, pre-carbon processing at 200 C for 30 minutes, refining
the sample using mortal and ball milling for 24 hours. sieving process using a 100
sieve. The chemical activation process uses KOH 0.3 M. Monolith pellet printing
using a Hydraulic Press with a pressure of 8 tons for 2 minutes, and a pyrolysis
process with a carbonization stage. carried out in a nitrogen gas atmosphere at a
temperature of 650 C with a flow rate of 3 L / minute. The next process was
washing the sample using distilled water for several days until the pH of the water
was neutral and continued with the drying process using an oven at a temperature
of 110 C for 2 days. The next process is pellet polishing and immersion using
H2SO4. Each variation of the separator in this study is given a sample code,
namely KABK-1, KABK-2, and KABK-3 where KABK-1 is Whatman paper
separator, KABK-2 for filter paper separator, and KABK-3 for chicken egg
separator.
The results obtained are shrinkage of carbon mass in this study was obtained by
24.59%. The value of mass, diameter, thickness, volume, and density of carbon
pellets before the carbonization process was 0.733 g; 1,930 cm; 0.196 cm; 0.571
cm3; and 1.271 g / cm3. While the mass, diameter, thickness, volume, and density
value of carbon pellets after carbonization were 0.244 g; 0.413 cm; 0.183 cm;
0.287 cm3; and 0.852 g / cm3. The microstructure analysis showed that the carbon
electrode was amorphous, indicated by the presence of a peak at an angle of 2θ
around 240 and 440. Specific capacitance was determined by the Cyclic
Voltammetry method and was found to be 217.22 F / g, 176.18 F / g, and 82.8 F /
g 121.63 F / g for the Whatman paper, filter paper, and chicken egg membrane
separator, respectively. The highest specific capacitance was in the KABK-1
sample with a value of 217.22 F / g.
Keywords: date seeds, separator, supercapacitor, activated carbon, electrodes
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