Synthesis of porous carbon sphere based on starch and its application of electric double layer capacitor

Abstract

The present work reported the preparation of mesoporous activated carbon spheres (MCS) based on potato starch through the activation of CO2. N2 adsorption strategy was employed to investigate the influences of activation time and temperature on the MCS properties. On the other hand, the galvanostatic charge-discharge and cyclic voltammetry (CV) were applied to analyze the influence of the porosity on its electrochemical behaviors. The electrochemical experiment results confirmed that MCS was distinctive in its capacitive property and only has slight internal resistance. This corresponded to the maximal specific capacitance value.