Development of a new flexible nanogenerator from electrospun nanofabric based on PVDF/talc nanosheet composites

Soft Matter
Sawan ShettyS Anandhan

Abstract

Herein, a flexible piezoelectric nanogenerator composed of electrospun talc/PVDF [poly(vinylidene fluoride)] nanocomposite fabrics has been developed. These nanocomposite fabrics demonstrated enhanced mechanical and piezoelectric properties compared with pristine PVDF nanofabrics. In particular, nanocomposite fabrics with 0.50 wt% talc yielded 89.6% of polar β-phase in the PVDF matrix, thereby augmenting its piezoelectric response. X-ray diffraction, Fourier transform infrared spectroscopy, and differential scanning calorimetry conclusively affirmed the promotion of polar β-phase in the talc/PVDF nanocomposite fabrics. The 0.50 wt% talc/PVDF nanocomposite fabric based nanogenerator produced an open-circuit voltage and power density of 9.1 V and 1.12 μW cm-2, respectively, under repetitive finger tapping mode (under a load of 3.8 N). Furthermore, the nanogenerator was also subjected to frequency modulated-shaker mode, wherein an output voltage of 8.9 V was produced. Improved flexibility, mechanical robustness, and enhanced piezoelectric responsiveness of this nanogenerator could possibly pave the way for its use in portable self-powered devices.

References

Oct 22, 2014·Physical Chemistry Chemical Physics : PCCP·David A BeattieKai-Ying Yeap
Feb 26, 2018·Polymers·Liuxia RuanXianmin Zhang

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Methods Mentioned

BETA
scanning electron microscopy
X-ray
transmission electron microscopy
differential scanning calorimetry
electron diffraction

Software Mentioned

LabVIEW

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