Dielectric and piezoelectric properties of PVDF-[0.5Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Ca0.3)TiO3] composite for energy harvesting to power IoT sensors.

Autor: Lipsa, Loree, Parida, S.
Předmět:
Zdroj: AIP Conference Proceedings; 2024, Vol. 2995 Issue 1, p1-4, 4p
Abstrakt: (1-x)PVDF-(x)[0.5Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Ca0.3)TiO3] composite films with x = 0, 0.2, 0.4 were synthesized and the comparative dielectric and ferroelectric properties were studied. 0.5Ba(Zr0.2Ti0.8)O3 0.5(Ba0.7Ca0.3)TiO3 (BZT-BCT) ceramic was synthesized by conventional solid state reaction method. After phase confirmation of calcined powder, it was added to Poly(vinylidene fluoride)(PVDF) solution with different weight percentage and composite films were prepared by solvent casting followed by hot pressing method. XRD as well as FTIR analysis shows the formation of electroactive β-phase of PVDF and all the samples are having fraction of β-phase more than 65%. The dielectric constant of polymer ceramic composite film increases from 10.2 to 17 for x = 0 to 0.4. All the polymer ceramic composite samples are having dissipation factor less than 0.1. Ferroelectric hysteresis study shows that remnant polarization increases with increase of ceramic content. The efficiency of the energy harvesting have been evaluated for the application. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index