Self-poled Efficient Flexible “Ferroelectretic” Nanogenerator: A New Class of Piezoelectric Energy Harvester

摘要: Superior ferro- and piezo-electret properties in a self-poled, porous hybrid ferroelectretic polymer nanocomposite film for next-generation device paradigms is introduced by in situ generation of platinum (Pt) nanoparticles (NPs) embedded poly(vinylidenefluoride-co-hexafluoropropylene) P(VDF–HFP). The cooperative functionality between the self-polarized β-phase micropores as charge trapping sites realized using simple solvent evaporation method. As consequence, resulting exhibits extraordinary behavior, demonstrated superior electrical square-shaped hysteresis loop with large remnant polarization (Pr≈61.7 μC cm−2), piezoelectric coefficient (d33∼−686 pC N−1), ultrahigh dielectric (er=2678, tan δ=0.79 at 1 kHz). A new type nanogenerator (FTNG) fabricated flexible that effectively converts applied mechanical energy into upon compressive normal stress (e.g., actuating human finger). 18 V open-circuit output voltage expected 17.7 μA short-circuit current are generated from FTNG under 4 MPa amplitude. high conversion efficiency (ηpiezo≈0.2 %) shows well suited next piezoelectric-based harvesters. operation more than 50 blue LEDs, 25 green several capacitors without any subsidiary batteries FTNG.