SUPERCAPACITORS ELECTRODES PREPARED WITH VAPOR-PHASE POLYMERIZED POLY(3,4- ETHYLENEDIOXYTHIOPHENE) (PEDOT)

摘要

The VPP method was employed to polymerize PEDOT onto thernsurface of commercially available carbon coated Al foil at differentrntemperatures. The resulting composite thin films were applied asrnelectrode materials for use in supercapacitors. The effect ofrnpolymerization temperature on morphology and electrical propertiesrndemonstrate that both temperature and morphology were crucial tornthe capacitive behavior. The high specific surface area which isrnobtained at high polymerization temperature allows the PEDOT to bernexposed to more counter ions than the samples prepared at lowrnpolymerization temperature. This results in a more effective ionicrnexchange and resulted in higher capacitance. The highest specificrncapacitance (134 F/g) was obtained with the composite prepared atrnthe highest polymerization temperature (110 ℃), which correspondsrnto the highest specific surface area and conductivity.