Synergistic effect of graphene nanosheet and BaTiO3 nanoparticles on performance enhancement of electrospun PVDF nanofiber mat for flexible piezoelectric nanogenerators
By Kunming Shi, Bin Sun, Xingyi Huang, P. Jiang. Nano Energy, 2018
453 citations recorded by the source corpus.
Abstract Piezoelectric nanogenerators (PENGs) with good flexibility and high outputs have promising and outstanding applications for harvesting mechanical energy and powering electronics. In this work, PENGs are fabricated by using electrospun nanocomposite fiber mats comprising barium titanate (BT) nanoparticles, graphene nanosheets and poly(vinylidene fluoride) (PVDF). When the nanocomposite fiber mats are composed of 0.15 wt% graphene nanosheets and 15 wt% BT nanoparticles, the open-circuit voltage and electric power of the PENG can reach as high as 11 V and 4.1 μW under a loading frequency of 2 Hz and a strain of 4 mm, and no apparent decline of the open-circuit voltage is observed after 1800 cycles in the durability test. In addition, the PENG generate a peak voltage as high as 112 V during a finger pressing-releasing process, which can light up 15 LEDs and drive an electric watch. The improved output of the PENG is ascribed to the synergistic contribution of the BT nanoparticles and graphene nanosheets to the piezoelectric performance enhancement of the nanocomposite fibers. This study shows that the nanocomposite fiber based flexible PENGs are promising mechanical energy harvesters and effective power sources for portable electronic and wearable devices.
Subfields: Biomedical Engineering, Mechanical Engineering, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/75dbcb0930c68a3777f1011042ee19c1679171ef
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In Biomedical Engineering
Citations in the corpus
- A review of flexible perovskite oxide ferroelectric films and their application (2020, background): “Hybrid nanocomposite flexible generator devices advent apparently as an inescapable trend due to their combination of both flexibility and high efficiency, each deriving from the inherence of single materials [39,109,110].”
- Porous, multi-layered piezoelectric composites based on highly oriented PZT/PVDF electrospinning fibers for high-performance piezoelectric nanogenerators (2021, background): “At first, perovskite piezoelectric ceramics ((K, www.springer.com/journal/40145 Na,Li)NbO3 [1,2], BaTiO3 [3], and Pb(Zr,Ti)O3 [4,5]) and piezoelectric semiconductors (ZnS [6], ZnO [7], and CdS [8]) attracted lots of attention due to their excellent piezoelectric coefficients, but the brittleness of ”
- A Review of Piezoelectric PVDF Film by Electrospinning and Its Applications (2020, unknown): “A more recent article by Shi et al. introduced the PENGs, adding a BT and Gr composite to the PVDF fibers [107].”