Synthesis of PVDF-graphene nanocomposites and their properties
2013; Elsevier BV; Volume: 581; Linguagem: Inglês
10.1016/j.jallcom.2013.07.118
ISSN1873-4669
AutoresMd. Ataur Rahman, Gwiy‐Sang Chung,
Tópico(s)Innovative Energy Harvesting Technologies
ResumoThis study describes the effect of adding reduced graphene oxide (RGO) on the micro-structure, electric field-induced strain, and ferroelectric properties of polyvinylidene fluoride (PVDF). Nanocomposite film was prepared by simple solution casting of the PVDF/graphene oxide (GO) solution. PVDF/RGO film was produced by in situ thermal reduction of the PVDF/GO film. The effects of GO and RGO on the characteristics of PVDF were examined by scanning electron microscopy, energy dispersive spectroscopy, Fourier transform-infrared spectroscopy, and X-ray diffraction measurements. The electric field-induced strain was markedly enhanced up to Smax/Emax = 16.66 pm/V for 0.3 wt% GO loading. The dielectric constant increased from 16 to 69 at 1 kHz. The polarization–electric field loop exhibited enhanced remnant polarization from 0.8 to 2.5 μC/cm2. Therefore, the PVDF/graphene nanocomposite has adjustable piezoelectric and ferroelectric properties to be used for energy harvesting.
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