High energy density induced by DA@NBT powders in PVDF flexible and transparent composite films

Energy storage of polymer-ceramic composite films is urgently demanded in modern electric power supply and renewable energy system. Herein, a series of flexible composite films are fabricated by combining Na 0.5 Bi 0.5 TiO 3 @dopamine (NBT@DA) as filler and poly(vinylidene fluoride) (PVDF) as matrix...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2018-06, Vol.29 (11), p.9129-9136
Main Authors: Wang, Zhuo, Nian, Wenwen, Wang, Tian, Xiao, Yujia, Chen, Haonan
Format: Article
Language:English
Subjects:
Addition polymerization
Bismuth titanate
Breakdown
Chain mobility
Characterization and Evaluation of Materials
Chemical industry
Chemistry and Materials Science
Dopamine
Electric power supplies
Energy storage
Flux density
Materials Science
Optical and Electronic Materials
Polymer films
Polyvinylidene fluorides
Portable equipment
Vinylidene fluoride
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Summary:Energy storage of polymer-ceramic composite films is urgently demanded in modern electric power supply and renewable energy system. Herein, a series of flexible composite films are fabricated by combining Na 0.5 Bi 0.5 TiO 3 @dopamine (NBT@DA) as filler and poly(vinylidene fluoride) (PVDF) as matrix via a solution casting method. The sample with 1 vol% NBT@DA/PVDF composite film exhibits the highest breakdown strength (380 kV/mm), and thus a high energy density of 9.16 J/cm 3 is achieved in the composition, which is 1.5 times higher than that of pure PVDF. The improved breakdown strength is attributed to the reduced mobility of polymer chains induced by the NBT@DA powders. In addition, the outstanding transmittance and flexibility make the composite films as a promising candidate for future flexible portable energy devices.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-018-8940-4