CD Skripsi
Pengaruh Temperatur Aktivasi Kimia Terhadap Kinerja Elektroda Karbon Aktif Berbahan Dasar Biomassa Kulit Jeruk (Citrus Sinensis) Untuk Aplikasi Superkapasitor
The effect of chemical activation temperature on the performance of activated carbon electrodes based on orange peel biomass (citrus sinensis) for supercapacitor applications has been studied. Activated carbon was prepared by chemical activation using 0.5 M ZnCl2 with temperature variations of 750 °C (JR-750 sample), 800 °C (JR-800 sample), and 850 °C (JR-850 sample). Temperature treatment is given under N2 gas pressure. Different temperature treatments can affect the physical and electrochemical properties of the three electrodes. Physical properties include density which shows an average shrinkage of 30.34%, 45.19%, and 43.35% for samples JR-750, JR-800, and JR-850 respectively. The crystal properties show an Lc value of 4.075 nm, La of 13.19 nm, d002 of 25.47°, d100 of
45.96° for sample JR-750. The JR-800 sample shows an Lc value of 12.39 nm, La of
25.79 nm, d002 of 25.18°, d100 of 44.80°. The JR-850 sample shows an Lc value of
6.05 nm, La of 13.16 nm, d002 of 25.33° d100 of 44.66°. The morphological shape using scanning electron microscope characterization, and the number of elements contained in the electrode using energy dispersive X-ray characterization showed the highest carbon content in sample JR-800 with a mass percentage of 83.67% or atomic percentage of 92.22%. Electrochemical properties were analyzed using the cyclic voltammetry and galvanostatic charge-discharge methods. The cyclic voltammetry test resulted in specific capacitance values of 133.68 F/g, 222.80 F/g,
148.92 F/g for samples JR-750, JR-800, and JR-850 resprectively. Based on all test results and analysis, it is shown that the physical and electrochemical properties of supercapacitor electrodes are influenced by the amount of temperature applied. The specific capacitance value produced is at the optimum temperature.
Keyword: Orange peel, activation temperature, activated carbon electrode, supercapacitor.
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