CD Skripsi
Sintesis Karbon Aktif Berbasis Daun Jeruk Nipis (Citrus Aurantifolia S) Sebagaimaterial Elektroda Untuk Aplikasi Superkapasitor
Physical activation temperature has significant impact to improve physical properties of activated carbon temperatures of 800ºC, 850ºC, and 900ºC for supercapacitor cell applications. In this study, the synthesis of porous carbon was carried out through several stages, that is pre-carbonization, chemical activation using ZnCl2, carbonization using N2 gas at a temperature of 600ºC, and physical activation using CO2. The activation temperature were varied at temperature of 800ºC, 850ºC, and 900ºC. Density analysis showed that Citrus aurantifolia S. leaves sampel activated at a temperature of 850ºC (DJN-850) has the highest density reduction of 52.24%. X-ray diffraction analysis of samples show an amorphous carbon structure characterized by broad peaks at 22º and 44º angles. Scanning electron microscopy analysis also reveals that the DJN-850 sample has rich mesoporous pores with an high carbon content of 90.25%. The Fourier transform infrared spectroscopy have identified the presence of functional groups of O-H, C-O, C-H, C=C, and C≡C in the sample. The electrode which was activated at 850ºC (DJN-850) also has the highest a specific surface area of 675.13 m2/g with micro-mesoporous pores. Furthermore, the specific capacitance of the samples measured using cyclic voltammetry and galvanostatic discharge are 144.14 F/g and 189 F/g, respectively. These results indicate that the optimum activation temperature for Citrus aurantifolia S. leaves based carbon electrodes for supercapacitor applications is 850ºC.
Keywords: Citrus aurantifolia S., activation temperature, porous carbon, supercapacitor
Tidak tersedia versi lain