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In this work, the coal tar pitch-based activated carbons (ACs) were prepared by KOH activation for electrode materials of supercapacitor. The effects of activation temperature on electrochemical performance of the ACs were inves- tigated with cyclic voltammogram (CV) measurement. The textural and morphological properties of the ACs were mea- sured by adsorption isotherms and field emission scanning electron microscope (FE-SEM) analyses, respectively. The experimental results indicated that the specific capacitance of the ACs increased with developing the micropore volume by activation temperature. As a result the specific capacitance of the ACs increased, owing to the development of micro pore volume of the ACs.

Influence of KOH Activation on Electrochemical Performance of Coal Tar Pitch-based Activated Carbons for Supercapacitor