Physics

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Browsing Physics by Subject "activating agent"

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    PEMBUATAN ELEKTRODA KARBON DARI BIOMASSA KULIT SALAK DENGAN VARIASI AGEN PENGAKTIF UNTUK APLIKASI SEL SUPERKAPASITOR
    (Elfitra, 2022-03) Simanjuntak, Shiva Maulana
    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 salak shell biomass with various chemical activators with respective sample codes, namely KS-ZnCl2, KS-KOH and KS-NaOH. The manufacture of carbon electrodes is carried out by several processes, namely precarbonization, 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. Pre-carbonized mass shrinkage of 29,29%. The smallest density value was found at the carbon electrode in the KS-KOH that is 0,76 gcm-3. This research concluded that KOH was the optimum activating agent for the best performance of the supercapacitor from salak shell biomass.
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    PENGARUH SUHU AKTIVASI FISIKA TERHADAP ELEKTRODA KARBON AKTIF SEL SUPERKAPASITOR DARI BIOMASSA BIJI KURMA KHALAS
    (Elfitra, 2022-04) Indriani, Arum
    Physical activation can affect the quality of carbon electrodes so that it can improve the performance of supercapacitor cells. In this study, carbon electrodes were prepared from the Khalas Dates Seeds by varying their physical activation temperatures of 7000C, 7500C and 8000C. Those samples were coded according to their activation temperatures, i.e. BKK-700, BKK-750 and BKK-800. The carbon electrode preparation began with the pre-carbonization process, followed by a chemical activation process using 0.3 M of KOH activator, then carbonized at a temperature of 6000C and continued to physical activation under CO2 flow. The BKK-750 sample has the highest density loss with an average density loss of 36%. The temperature of 750C was found to be the best for manufacturing activated carbon electrodes produced from the biomass of the Khalas Date Palm in improving the performance of supercapacitor cells in this study.