Synthesis and characterization of flexible PVDF/Bi2Al4O9/RGO based piezoelectric materials for nanogenerator application

摘要

Flexible polymer-based piezoelectric nanogenerators have attracted the researchers the most due to their mechanical flexibility, low fabrication cost and pollution-free energy harvesting from sources such as vibration, mechanical load, human motion and waste heat. Here, we report a flexible piezoelectric nanogenerator with different kinds of nanofiller such as reduced graphene oxide and bismuth aluminate Bi2Al4O9 ceramic in Polyvinylidene fluoride (PVDF) matrix. The structural and morphological properties of nanocomposite films are examined by X-ray diffraction (XRD) and Scanning electron microscopy (SEM). The Fourier transform infrared spectroscopy (FTIR) studies revealed the fraction of beta-phase enhancement from 53 to 76% with incorporation of these nanofillers. The nanocomposite films of PVDF/Bi2Al4O9/RGO showed maximum value of remnant polarization (P-r) is 0.0189 mu C/cm(2) at an electric field of 165 kV/cm and the value of electric output voltage and current generated from nanocomposite films is 5.92 V and 0.76 mu A for PVDF/Bi2Al4O9/RGO based nanocomposite. The PVDF/Bi2Al4O9/RGO based nano-composite generates a maximum output power density of 0.457 mu W/cm(2) at 12 M Omega resistance which is around 20 times more than that of bare PVDF film. (C) 2020 Elsevier B.V. All rights reserved.