Abstract: The electrochemical characteristics and specific capacitance were investigated by preparation processes (dip
coating method, doctor blade coating method and paste rolling method) of activated carbon electrode for an EDLC
(electric double layer capacitor). The EDLC using LiPF6 salts and PC-DEC solvents showed good specific
capacitance, 130 F/g and small IR-drop at linear time-voltage curve, 0.11 V. Cyclic voltammetry analysis using the
activated carbon electrode prepared by dip coating method was shown closer to ideal EDLC characterization.

Key words: EDLC, Activated carbon, Dip coating, Doctor blade coating, Paste rolling.