Abstract
Manganese rocks are classified into manganese oxide, silicate, and carbonate. The research was carried out to synthesize carbon manganese oxide from the leaching of manganese rock and how to influence the physical and electrical properties of carbon manganese oxide from the leaching of manganese rock as the primary material for supercapacitor electrodes. The highest capacitance value produced was 65.3 µF in the composite ratio MnO2 : Carbon 0.25 g : 0.75. In the resistance test, the lowest resistance value was obtained in comparing the composite MnO2 : Carbon 0.25 g : 0.75 g with a resistance value of 1.92 kW.The highest inductance value obtained was 126.7mHon the composite ratio MnO2 : Carbon 0.75 g : 0.25 g. In the conductivity test, the highest value was obtained at 60.4 µS cm-1 in the composite ratio MnO2 : carbon 0.75 g : 0.25 g.
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