Synthesis, Modeling and Characterization of Conducting Polymers

摘要

This paper presents synthesis and characterization of polypyrrole based conducting polymers in terms of electronic and mechanical disciplines. Using the electrochemical polymerization approach, conducting polymer samples with different dimensions (length, width, and thickness) were fabricated. For each sample, both sinusoidal and step excitations were used to study its mechanical and electrical properties. An equivalent electric circuit based on constant phase element (CPE) is proposed to model such responses. Electrochemical impedance spectroscopy (EIS) method was employed to characterize conducting polymer responses, where nonlinear least squares fitting method was used to identify the relationship between the dimensions of conducting polymers and model elements' parameters.