Fabrication and characterization of highly efficient flexible energy harvesters using PVDF-graphene nanocomposites

This paper describes the development of flexible energy harvesters using PVDF-graphene nanocomposites. Nanocomposite films are prepared by simple solution casting of polyvinylidene fluoride/graphene oxide (PVDF/GO) solution. PVDF/reduced graphene oxide (PVDF/RGO) films are produced by in situ therma...

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Published inSmart materials and structures Vol. 22; no. 8; pp. 085017 - 1-10
Main Authors Ataur Rahman, Md, Lee, Byung-Chul, Phan, Duy-Thach, Chung, Gwiy-Sang
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.08.2013
Institute of Physics
Subjects
Devices
Energy harvesting
Energy use
Exact sciences and technology
Fourier transforms
General equipment and techniques
Graphene
Harvesters
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Nanocomposites
Oxides
Physics
Polyvinylidene fluorides
Transducers
Scanning electron microscopy
Energy recovery
XRD
Dispersive spectrometry
Flexibility
Fabrication
Nanocomposites
Graphene
Output voltage
Piezoelectric transducers
Vinylidene fluoride polymer
Energy conversion
Graphene oxide
Fourier-transformed infrared spectrometry
Permittivity
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Summary:This paper describes the development of flexible energy harvesters using PVDF-graphene nanocomposites. Nanocomposite films are prepared by simple solution casting of polyvinylidene fluoride/graphene oxide (PVDF/GO) solution. PVDF/reduced graphene oxide (PVDF/RGO) films are produced by in situ thermal reduction of PVDF/GO films. The effects of the presence of GO and RGO on the characteristics of the PVDF are examined through scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR) and x-ray diffraction (XRD) measurements. The ferroelectric behavior and dielectric constant of the nanocomposite show remarkable increase compared to those of pure PVDF for a value of 0.1 wt% of GO loading. The PVDF/RGO film-based energy harvesting (EH) device generates higher energy compared to those of PVDF and PVDF/GO films. The nanocomposite EH device scavenges a maximum power of 36 nW against a load resistance of 704 kΩ.
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ISSN:0964-1726
1361-665X
DOI:10.1088/0964-1726/22/8/085017