A Methodological Study on the Construction of Piezoelectric-Conductive Composite Nanofibers Based on Structural Design

In order to solve the problem that piezoelectric polymers are unable to conduct electrical signals and conductive polymers are unable to generate electrical signals on their own, three piezoelectric-conducting nanofibers with different structures were successfully constructed by electrospinning in this study, which are capable of both generating and conducting electrical signals. On this basis, the effects of structural features on the electrical activity of piezoelectric-conductive materials were investigated. It is shown that the incorporation of the conductive phase has a positive effect on the enhancement of the piezoelectricity of the composites, among which the piezoelectric-conductive composite nanofibrous membrane with the Janus structure has the highest d₃₃ = 24.4 pC/N, and the composite of the materials does not affect the conductivity of the conductive phase with the conductivity of 6.78*10⁻² S/m. Based on the experimental data and the analysis of the principle, the conductive phase of the piezoelectric phase was summarized and the enhancement principle, the composite method of piezoelectric-conductive nanofiber membrane based on structural design is proposed.