Cyclic voltammetry was used to deposite polyaniline/activated carbon(PANI/AC)film on flexible graphite paper.The surface morphology of the PANI/AC film was characterized by SEM

and the electrochemical properties of PANI/AC film electrode were investigated by cyclic voltammetry(CV)

electrochemical impedance spectroscopy(EIS)and galvanostatic charge-discharge.From SEM graphs

PANI/AC film had different forms with increasing scan cycles

and from electrochemical measuring results

PANI/AC electrode synthesized by three scan cycles had the best electrochemical performance among those different scan cycles electrodes.Specific capacitance was about 504 F穏-1

and only about 14% of the initial capacitance was lost after 2000 cycles in circling life process.