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Type: Journal article
Title: Dielectric properties of graphene/titania/polyvinylidene fluoride (G/TiO2/PVDF) nanocomposites
Author: Ishaq, S.
Kanwal, F.
Atiq, S.
Moussa, M.
Azhar, U.
Losic, D.
Citation: Materials (Basel, Switzerland), 2020; 13(1):1-11
Publisher: MDPI
Issue Date: 2020
ISSN: 1996-1944
Statement of
Saira Ishaq, Farah Kanwal, Shahid Atiq, Mahmoud Moussa, Umar Azhar and Dusan Losic
Abstract: Flexible electronics have gained eminent importance in recent years due to their high mechanical strength and resistance to environmental conditions, along with their effective energy storage and energy generating abilities. In this work, graphene/ceramic/polymer based flexible dielectric nanocomposites have been prepared and their dielectric properties were characterized. The composite was formulated by combining graphene with rutile and anatase titania, and polyvinylidene fluoride in different weight ratios to achieve optimized dielectric properties and flexibility. After preparation, composites were characterized for their morphologies, structures, functional groups, thermal stability and dielectric characterizations by using scanning electron microscopy, X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, thermal gravimetric analysis and impedance spectroscopy. Dielectric results showed that prepared flexible composite exhibited dielectric constant of 70.4 with minor leakage current (tanδ) i.e., 0.39 at 100 Hz. These results were further confirmed by calculating alternating current (AC) conductivity and electric modulus which ensured that prepared material is efficient dielectric material which may be employed in electronic industry for development of next generation flexible energy storage devices.
Keywords: dielectric properties; graphene; nanocomposite; polyvinylidene fluoride; titania
Rights: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
RMID: 1000012926
DOI: 10.3390/ma13010205
Grant ID:
Appears in Collections:Chemical Engineering publications

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