Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/3696
Title: Hydroxylated BiFeO3 as efficient fillers in poly(vinylidene fluoride) for flexible dielectric, ferroelectric, energy storage and mechanical energy harvesting application
Authors: SASMAL, A
PATRA, A
SUJATHA DEVI, P
SEN, S
Keywords: vinylidene fluoride
Issue Date: 7-Feb-2021
Publisher: Royal Society of Chemistry
Citation: Dalton Transactions; 50(5):1824-1837
Abstract: Here we report the effect of surface hydroxylation of BiFeO3 fillers on the dielectric, ferroelectric, energy storage and mechanical energy harvesting performance of poly(vinylidene fluoride). Surface hydroxylation helped to improve the interfacial interaction between the filler and PVDF matrix by introducing a strong hydrogen bonding between the –OH group of the hydroxylated BiFeO3 filler surface and the –CF2 dipole of PVDF in place of electrostatic interfacial interaction between non-hydroxylated BiFeO3 and the –CH2 dipole of PVDF. The amount of polar phase increased to around 91% for a 7 wt% hydroxylated BiFeO3 loaded PVDF film (7BFOH) by this new type of interfacial interaction. The dielectric, ferroelectric, energy storage and mechanical energy harvesting performance of the PVDF based composite films also improved by the above said technique. Upon repeated human finger tapping, the 7BFOH film delivered ∼18 V output peak to peak open circuit ac voltage (VOC). After rectification, the VOC of the 7BFOH film was able to charge a 10 μF capacitor up to ∼3 V which was able to light up some LEDs (connected in parallel) together instantaneously, which proved the real life applicability of the composite films in low power consuming self-powered electronic devices.
URI: https://pubs.rsc.org/en/content/articlelanding/2021/DT/D0DT04017G#!divAbstract
http://hdl.handle.net/123456789/3696
Appears in Collections:2021



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