Electrochemical Performance of Activated Carbons with Different Specific Surface Area as Supercapacitor Electrode Materials

In this paper, we chose commercial activated carbons (AC) as electrode materials because the advantage of abundant in raw, lower price and larger specific surface area. First, we characterized the physical properties of these two ACs. Second, we utilized these ACs to prepare electrode as working electrodes and characterized in the 1 mol/L H2SO4, The results indicated that the specific surface of 1 AC and 2-AC are 758 m(2)/g and 1771 m(2)/g respectively. The tests of electrochemical capacitance performance indicated that the specific capacitance of electrode increased with the specific surface area increasing. And both electrochemical stability retained over 90% of the original capacitance.