Nano-ZnO decorated ZnSnO3 as efficient fillers in PVDF matrixes: toward simultaneous enhancement of energy storage density and efficiency and improved energy harvesting activity

Here, we report the effect of ZnO decoration on ZnSnO3 fillers on the dielectric property, energy storage behaviour and mechanical energy harvesting performance of PVDF matrixes. More enhanced dielectric constant and reduction in dielectric loss were achieved in PVDF–ZnO@ZnSnO3 (PVDF–ZNZS) films tha...

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Bibliographic Details
Published in:Nanoscale 2020-10, Vol.12 (40), p.20908-20921
Main Authors: Sasmal, Abhishek, Medda, Samar Kumar, P Sujatha Devi, Sen, Shrabanee
Format: Article
Language:English
Subjects:
Density
Dielectric loss
Dielectric properties
Energy
Energy harvesting
Energy storage
Fillers
Human motion
Motion sensors
Nanogenerators
Piezoelectricity
Sensors
Zinc oxide
Zinc stannate
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Summary:Here, we report the effect of ZnO decoration on ZnSnO3 fillers on the dielectric property, energy storage behaviour and mechanical energy harvesting performance of PVDF matrixes. More enhanced dielectric constant and reduction in dielectric loss were achieved in PVDF–ZnO@ZnSnO3 (PVDF–ZNZS) films than in PVDF–ZnSnO3 (PVDF–ZS) films for the same concentration of filler loading. Similarly, PVDF–ZNZS films showed simultaneous enhancement in electrical energy storage density and storage efficiency compared to PVDF–ZS composites. As all the constituent materials (PVDF, ZnSnO3 and ZnO) were piezoelectric, the resulting composite film showed improved piezoelectric energy harvesting performance too. After rectification, the output ac voltage was used to charge a 10 μF capacitor up to ∼5 V dc which was further used to light up some LEDs. Furthermore, in order to exhibit improved sensitive output, a hybrid piezo-tribo nanogenerator was fabricated which was demonstrated as a motion sensor, a weight sensor and a human body movement sensor as part of a real life application.
ISSN:2040-3364
2040-3372
DOI:10.1039/d0nr02057e