Sintesis dan Karakterisasi Reduced Graphene Oxide (RGO) Terdoping Nanopartikel Besi Oksida (Fe2O3) sebagai Eletroda Baterai Primer

Abstract

A study has been conducted on the Synthesis and Characterization of Reduced Graphene Oxide (RGO) Doped with Iron Oxide (Fe2O3) Nanoparticles as Primary Battery Electrodes. The purpose of this study was to analyze the characteristics of GO and RGO from commercial graphite, analyze the interaction of GO, RGO from commercial graphite with Fe2O3 metal and analyze the effect of the anode ratio (Fe2O3/GO and Fe2O3/RGO), cathode (GO and RGO) and electrolyte (NH4Cl) with variations in mass ratio (1:2:1; 1:2:2; and 2:2:1) on physical properties (current, voltage and electrical conductivity). This study used laboratory and descriptive experimental methods. GO was synthesized from commercial graphite by the Hummer method then RGO was produced after the addition of hydrazine. Fe2O3/GO and Fe2O3/RGO anodes were synthesized by impregnation method and each electrode Fe2O3/GO||Electrolyte||GO and Fe2O3/RGO||Electrolyte||RGO were synthesized by alloy method. Analysis of GO, RGO, Fe2O3/GO, Fe2O3/RGO and prototype electrodes Fe2O3/GO||Electrolyte||GO and Fe2O3/RGO||Electrolyte||RGO were analyzed using XRD, SEM-EDX and Multimeter. XRD data showed a sharp peak at C (001) at 2θ = 11.3° indicating that GO was successfully synthesized, then after the reduction process on GO the peak shifted to 2θ = 25.2° so that RGO was successfully synthesized. The diffraction patterns of Fe2O3/GO and Fe2O3/RGO show the same peaks where the dominant diffraction peaks are obtained at 2θ = 30.42°(220), 35.79°(311), 37.59°(222) and 43.45°(400) which prove that Fe2O3 has been successfully doped into GO and RGO. The existence and abundance of Fe2O3 in RGO are proven by SEM-EDX data. Electrical Conductivity (EDC) data from the Fe2O3/RGO||Electrolyte||RGO electrode with a mass ratio variation of 1:2:2 has the highest EDC value (632.00 µS/cm2), power density (144.00 W.Kg-1) and energy density (144 Wh.Kg-1) compared to other electrodes. The results of this study indicate that the correct ratio of anode : electrolyte : cathode mass and the type of material and composition used can improve the performance of primary battery electrodes.