Electrospun Poly(vinylidene fluoride-trifluoroethylene)-Based Polymer Nanocomposite Fibers for Piezoelectric Nanogenerators

Abstract

The present work deals with the preparation, characterization, and application of self-poled nanofibers using piezoelectric polymer poly­(vinylidene fluoride-trifluoroethylene), zinc oxide, and exfoliated graphene oxide by electrospinning process. The characterization of nanofiber is carried by different techniques such as field emission scanning electron microscopy, Fourier transform Infrared spectroscopy, X-ray diffraction techniques, and dynamic contact mode electrostatic force microscopy. The nanofiber based piezoelectric nanoenergy generator devices are fabricated for analyzing the energy generating efficiency. Piezoelectric hybrid nanofibers are exhibiting better energy generating efficiency and identified as potential material for energy harvesting applications.

Stimuli-Responsive Electrospun Piezoelectric Mats of Ethylene-co-vinyl Acetate–Millable Polyurethane–Nanohydroxyapatite Composites

“…However, in the nHA-loaded composites (Figure B), the nHA filler induces a ferroelectric property to them, as evidenced from the well-defined phase hysteresis loops. A phase hysteresis curve points toward a polarization-reversal feature . The composites exhibit their phase hysteresis in the negative axis only, which is attributed to the existence of internal bias in the composites arising from the specific arrangements of −OH groups in the nHA crystals .…”

“…Piezoelectric properties of the PVDF–TrFE copolymer have been found to be enhanced by incorporating a hybrid filler system constituted by nano-ZnO and exfoliated GO . By employing electrospinning, the piezoelectric features of this system have further been improved, without any external poling procedures …”

Synergistic Enhancement Properties of a Flexible Integrated PAN/PVDF Piezoelectric Sensor for Human Posture Recognition

“…Jiang et al [ 27 ] design a stretchable, breathable and stable nanofiber composite with a filling rate of 12%. The filling ratio of nanofibers prepared by Liu et al [ 13 ] and Cherumannil Karumuthil et al [ 28 ] by electrospinning was 13% and 10%, respectively. Similarly, Yang et al [ 29 ] prepared a flexible piezoelectric pressure sensor with a maximum filling ratio of 21% by magnetic stirring.…”

Self-Powered Wearable Piezoelectric Sensors Based on Polymer Nanofiber–Metal–Organic Framework Nanoparticle Composites for Arterial Pulse Monitoring

“…Among the different adopted strategies to induce electroactive β-phase, for example, spin-coating, casting, mechanical stretching, electrical poling, and electrospinning is a scalable and facile technique . Herein, the alignment of molecular −CH 2 /–CF 2 dipoles simultaneously occurs during electrospinning in the applied electric field . As a result, electrospun piezoelectric fibers exhibit superior ferro-, piezo-, and pyroelectric properties without postelectrical poling .…”

“…Carbon nanostructures such as graphene oxide (GO) and carbon nanotubes have also been employed to improve the piezoelectric properties of PVDF-based nanofibers through polar interaction between PVDF chains and functional groups of the carbon nanostructures. Recent studies have also determined better energy generation of poly­(vinylidene fluoride)-trifluoroethylene (PVDF-TrFE) nanofibers by the incorporation of ZnO/GO mixtures …”