Direct reform of graphite oxide electrodes by using ambient plasma for supercapacitor applications

Abstract

Ambient plasma is applied to graphite oxide electrodes directly to improve electrochemical properties for supercapacitor applications. Surface morphology of the electrodes after the plasma treatment changes dramatically and amount of oxygen reduced significantly, demonstrating a reduction effect on the graphite oxide electrode by the ambient plasma. Equivalent series resistance of the electrode also reduced from 108Ω to 84Ω after the plasma treatment. Corresponding specific capacitance, therefore, increases from 0.45Fcm−2 to 0.85Fcm−2, proving that the ambient plasma treatment is very efficient, clean, economic, and environment-friendly method to reform the graphite oxide electrodes directly for the supercapacitor applications.