Concurrently enhanced dielectric properties and energy density in poly(vinylidene fluoride)-based core–shell BaTiO3 nanocomposites via constructing a polar and rigid polymer interfacial layer

The interfacial zone plays a key role in regulating the dielectric capabilities of polymer-based composites. In this article, two kinds of polar polymers were designed and selected as the shell layer of BaTiO3 nanoparticles to investigate the influence of the chain conformation and band-gap width of...

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Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2022-04, Vol.10 (16), p.6323-6333
Main Authors: Ding, Cuilian, Tang, Xinxuan, Yu, Shiqi, Chen, Sheng, Liu, Zijin, Luo, Hang, Zhang, Dou
Format: Article
Language:English
Subjects:
Barium titanates
Chains (polymeric)
Coils
Dielectric properties
Electron affinity
Energy gap
Energy storage
Ferroelectricity
Fluorides
Flux density
Molecular conformation
Nanocomposites
Nanoparticles
Polymer matrix composites
Polymers
Polyvinylidene fluorides
Vinylidene fluoride
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container_issue 16
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container_title Journal of materials chemistry. C, Materials for optical and electronic devices
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creator Ding, Cuilian
Tang, Xinxuan
Yu, Shiqi
Chen, Sheng
Liu, Zijin
Luo, Hang
Zhang, Dou
description The interfacial zone plays a key role in regulating the dielectric capabilities of polymer-based composites. In this article, two kinds of polar polymers were designed and selected as the shell layer of BaTiO3 nanoparticles to investigate the influence of the chain conformation and band-gap width of an interfacial modifier on the dielectric behavior and energy storage properties of ferroelectric poly(vinylidene fluoride) (PVDF)-based nanocomposites. Compared with the polar coil-chain cyano-polymer poly[bis(2-cyanoethyl)-2-vinylterephthalate] (PECN), the polar rigid-chain cyano-polymer poly[bis(4-cyanophenyl)-2-vinylterephthalate] (PBCN) modifier with a high dielectric constant (ϵr) and low band-gap width showed a more noticeable effect on the enhanced dielectric and energy density storage of PVDF-based nanocomposites. The ϵr of PBCN@BT/PVDF nanocomposites increased from 7.8 to 16.9 at 103 Hz with the increasing PBCN@BT content from 0 vol% to 9 vol%. In addition, the highest breakdown strength of 464 MV m−1 and the maximum discharge energy density of 10.86 J cm−3 were achieved in 1 vol%-PBCN@BT/PVDF nanocomposites due to the higher electron affinity. This work furnishes a potential pathway for reaching the high-energy-density of polymer-based nanocomposites by taking the rigid polymer modifier with a low band-gap width.
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source Royal Society of Chemistry:Jisc Collections:Royal Society of Chemistry Read and Publish 2022-2024 (reading list)
subjects Barium titanates
Chains (polymeric)
Coils
Dielectric properties
Electron affinity
Energy gap
Energy storage
Ferroelectricity
Fluorides
Flux density
Molecular conformation
Nanocomposites
Nanoparticles
Polymer matrix composites
Polymers
Polyvinylidene fluorides
Vinylidene fluoride
title Concurrently enhanced dielectric properties and energy density in poly(vinylidene fluoride)-based core–shell BaTiO3 nanocomposites via constructing a polar and rigid polymer interfacial layer
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