CD Skripsi
Pemanfaatan Limbah Daun Salam (Syzygium Polyanthum) Sebagai Elektroda Karbon Dengan Variasi Konsentrasi Zncl2 Untuk Aplikasi Superkapasitor
Bio-kitchen waste is currently one of the most popular basic materials to be used as activated carbon because it has high porosity and conductivity as well as good stability with a suitable pore structure for supercapacitor electrodes. The purpose of this study was to determine the effect of the concentration of chemical activator ZnCl2 on the specific capacitance of the supercapacitor. Supercapacitor electrodes are prepared from the bio-waste of bay leaf (Syzygium polyanthum) with varying the activator concentrations of ZnCl2 0.5 M, 0.7 M and 0.9 M. The preparation of activated carbon electrodes follow of several steps, i.e drying bay leaf waste under the sun and in oven at 110ᴼC, pre-carbonization, grinding using mortar, sieving, chemical activation, molding, carbonization and physical activation. The carbonization processed was conducted at temperature of 600ᴼC in the N2 gas stream and physical activation was carried out at a temperature of 800ᴼC. The physical and electrochemical properties of activated carbon obtained was the determined its by density analysis, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Cyclic Voltammetry (CV) and Galvanostatic Charge Discharge (GCD). The XRD and SEM-EDS results of activated carbon eleary confirmed the nanofiber-connected pore structure with amorphous properties with the highest carbon content of 95.07%. Furthermore, the sample activated with 0.7 M of ZnCl2 (DS-0.7) possesses the highest specific capacitance value of 189 F/g at a current density of 1.0 A/g. Based on these finding, the 0.7 M ZnCl2 is the bast concentration for providing carbon electrode generated from bay leaf waste with the potential to be employed as supercapacitor carbon electrodes
Keywords : Bay leaf waste, carbon electrode, supercapacitor, and specific capacitance
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