Electrochemical impedance and cyclic voltammetry analysis of PEDOT: PSS-AgNPs composites

Conducting polymer PEDOT:PSS was mixed with Silver nanoparticles synthesised using green method. Nanocomposites were prepared through chemical deposition method, and their potential in optoelectronic and charge storage applications is explored. Structural properties of the nanocomposite were investigated using SEM and XRD. Electrodes made with AgNPs-PEDOT:PSS nanocomposite was investigated to analyse the specific capacitance, constant phase element, electrical, and ionic conductivity by EIS. Capacitive properties were further explored by Cyclic voltammetry where a sudden increase in specific capacitance was observed with the increasing amount of Silver nanoparticles into the matrix of PEDOT:PSS. Capacitance for AgNPs-deposited pellets increases especially for AgNPs-PEDOT:PSS 15% which illustrates the formation of the metal-polymer layer that stores the charges.