Electrochemical impedance study on nanostructured titanium dioxide polyaniline composite prepared by cyclic voltammetry

Abstract

In this study, electrochemical impedance of nanostructured titanium dioxide polyaniline composite prepared by cyclic voltammetry was investigated and suggested an equivalent circuit in which 5 elements taken part, such as R_s represents the electrolyte resistance, C_CPE represents the constant phase element, C_Y represents the young’s surface layer impedance, R_f and C_f represent the resistance and capacitance of  material film, respectively. The results showed that the more TiO₂ takes part in synthesis solution the bigger electrochemical impedance receives the composite, the more cyclic number carried out during synthesis of material the larger Nyquist cirle from which becomes.