High- quality factor poly (vinylidenefluoride) based novel nanocomposites filled with graphene nanoplatelets and vanadium pentoxide for high-Q capacitor applications

¹Department of Physics, B.S. AbdurRahman University, Chennai 600048, TN, India

²Mechanical & Industrial Engineering Department, Qatar University, P.O. Box 2713, Doha, Qatar

³Center for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar

⁴Department of Physics, School of Advanced Sciences, VIT University, Vellore-632014, TN, India

⁵Department of Chemical Engineering, University of Engineering and Technology, Peshawar, Pakistan

Adv. Mater. Lett., 2017, 8 (3), pp 288-294

DOI: 10.5185/amlett.2017.6539

Publication Date (Web): Jan 28, 2017

Copyright © IAAM-VBRI Press

E-mail: mbasheerahamed133@gmail.com

Abstract

Herein, we report the synthesis of poly (vinylidene fluoride) (PVDF) based novel nanocomposites reinforced with graphene nanoplatelets (GNP) and vanadium pentoxide (V₂O₅) as nanofillers. The PVDF/V₂O₅/GNP nanocomposite films were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), thermogravimetric analysis (TGA), polarized optical microscopy (POM) and scanning electron microscopy (SEM). The electrical properties of nanocomposites were investigated to ascertain the synergistic effect of fillers on the quality factor (Q-factor) of nanocomposites. The FTIR and XRD results infer good interaction between PVDF and V₂O₅ and the good dispersion of nanofillers in the PVDF matrix. The TGA results revealed that the thermal stability of PVDF/V₂O₅/GNP nanocomposite has improved at higher loading of nanofillers due to the good interaction between the nanofillers and the polymer matrix. The electrical analysis of nanocomposite films demonstrates high Q-factor value (1099.04) at 4.7 wt % V₂O₅ and 0.3 wt % GNP loading. With further increase in GNP loading to 1 wt %, the Q-factor becomes lower (356.52) which could be due to the enhanced conductivity of the samples. The significant enhancement in the value of Q-factor shows that the nanocomposites can be used as a potential candidate for high-Q capacitor applications. 

Keywords

Graphene nanoplatelets, PVDF, V2O5, high-Q capacitors.