CD Skripsi
Elektroda Karbon Dari Biomassa Batang Kelapa Sawit (Elaeis Guineensis Jacq) Dengan Pendopingan Nitrogen Untuk Aplikasi Sel Superkapasitor
Supercapacitors are energy storage media with short charging times, safe use, longer life times and simple models. One of the main components in supercapacitor cells is the electrode. Efforts to optimise the manufacture of carbon electrodes were carried out by synthesising palm trunk-derived carbon materials with nitrogen doping in the form of melamine and thiourea to obtain high specific capacitance. Palm trunk biomass was synthesised through pre-carbonisation process at 250℃ for 2 hours to produce self-adhesive carbon powder, chemical activation with 0.3 M KOH activating agent with the addition of 0.3 gram melamine and 0.3 gram thiourea. The combustion process was carried out in an integrated furnance, where carbonisation was carried out at 800℃ with nitrogen gas flow rate of 1.5 L/min and heating rate of 3°C/min for 2 hours and 16 minutes and physical activation was carried out at 900℃ with carbon dioxide gas flow rate of 1 L/min and heating rate of 10°C/min for 10 minutes. The results showed that the BKS-KT sample produced the best carbon electrode with a 3D hierarchical structure, diverse functional groups such as O-H, C-H, C≡C, C=C, N=O, and C-O and a high carbon (C) content of 92.3%. The electrochemical properties of BKS-KT supercapacitor cell electrode by cyclic voltammetry method has the highest specific capacitance, specific power, and specific energy values of 413.13 F/g, 206.56 W/kg, 57.38 Wh/kg respectively at a scan rate of 1 mV/s in 1M H2SO4 electrolyte solution at a voltage of 1 V and has a surface area of 1,136 m2/g. The results of this study provide a clear picture that the impregnation process of adding Thiourea can improve the performance of biomass-derived supercapsitor cells.
Keywords: Oil Palm Trunk, Nitrogen Coupling, Supercapacitor, Melamine, Thiourea
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