Microstructure and dielectric properties of sub-micron hollow sphere (Ba(0.6)Sr(0.4))TiO(3)/PVDF composites

Yiting Guo; Kena Zhang; Nan Meng; Wanli Wu; Yujian Wang; Jie Xu; Emilia Pawlikowska; Mikołaj Szafran; Feng Gao

doi:10.1049/iet-nde.2019.0013

IET Nanodielectrics (Aug 2019)

Microstructure and dielectric properties of sub-micron hollow sphere (Ba(0.6)Sr(0.4))TiO(3)/PVDF composites

Yiting Guo,
Kena Zhang,
Nan Meng,
Wanli Wu,
Yujian Wang,
Jie Xu,
Emilia Pawlikowska,
Mikołaj Szafran,
Feng Gao

Affiliations

Yiting Guo: State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University
Kena Zhang: State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University
Nan Meng: School of Engineering and Materials Science, Queen Mary University of London
Wanli Wu: State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University
Yujian Wang: State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University
Jie Xu: State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University
Emilia Pawlikowska: Warsaw University of Technology
Mikołaj Szafran: Warsaw University of Technology
Feng Gao: State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University

DOI: https://doi.org/10.1049/iet-nde.2019.0013

Abstract

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Hollow sphere (Ba(0.6)Sr(0.4))TiO(3) (HS-BST) powders with sub-micron size and different shell thickness were synthesised through template-assisted method. HS-BST/poly(vinylidene fluoride) (PVDF) composites were prepared using tape casting method. The effects of particle size and shell thickness of HS-BST on the microstructure, dielectric tunability, and energy storage properties of HS-BST/PVDF composites were investigated. Results showed that all HS-BST particles were uniformly dispersed in PVDF matrix without agglomeration. With decreasing the size of HS-BST particles, the dielectric constant and loss of HS-BST/PVDF composites decreased, while the breakdown strength initially decreased and then increased. In addition, the theoretical model of the dielectric tunability of inorganic/organic system related to the shape factor (n) of inorganic particles was used to simulate and n value of 0-dimensional spherical particles was estimated. For HS-BST/PVDF composite, the n in the model was 2–2.5, corresponding to HS-BST particles with a diameter ranging from 0.44 to 2.57 μm, and a shell thickness ranging from 40 to 500 nm.

Published in IET Nanodielectrics

ISSN: 2514-3255 (Online)
Publisher: Wiley
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://ietresearch.onlinelibrary.wiley.com/journal/25143255

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