Preparation and characterization of PANI-PPY/PET fabric conductive composite for supercapacitors

The conductive polyester (PET) fabric is prepared by in-situ polymerization of aniline and pyrrole. It has been found that copolymers with different monomer molar ratios will exhibit different morphologies on the surface of the fabric. In addition, when the monomer ratio of aniline (An) and pyrrole (Py) is 0.75:0.25, the conductivity and electrochemical properties of the fabric reaches the best. Under such circumstance, the electrode fabric has an active material loading of 8.5 mg/cm(2), an electrical conductivity of 1.44 x 10(-2) S/cm, and areal specific capacitance of the fabric electrode achieves 1046 mF/cm(2) at a current density of 2 mA/cm(2). The volumetric energy density of supercapacitor fabricated by this electrode reaches 0.043 mWh/cm(3) at a power density of 0.005 W/cm(3.) Finally, the supercapacitor demonstrates excellent flexibility during the bending test, and posses a capacitance retention of 54.2% after 1000 cycles.

Automated summary

The study prepared conductive polyester fabric by in-situ polymerization and found the optimal molar ratio of aniline and pyrrole to achieve the best conductivity and electrochemical properties. The electrode fabric showed high specific capacitance and energy density for supercapacitor applications, with excellent flexibility and capacitance retention after 1000 cycles.