Preparation and dielectric properties of poly(vinylidene fluoride)/Ba0.6Sr0.4TiO3composites

Guoxin Hu, Feng Gao, Jie Kong, Shengjie Yang, Qingqing Zhang, Zhengtang Liu, Yong Zhang, Huajun Sun

Research output: Contribution to journalArticlepeer-review

109 Scopus citations

Abstract

The poly(vinylidene fluoride) (PVDF)/barium strontium titanate (BST) composites were fabricated by solution casting method. The microstructure and dielectric properties of composites comprising polyvinylidene fluoride (PVDF) and barium strontium titanate (BST) particles have been investigated. It was found that the permittivity of the BST/PVDF composites increases from 16 to 40 while loss tangent decreases from 0.27 to 0.19 with BST fillers increasing from 10 vol% to 40 vol%. The tunability of PVDF + 40 vol% BST composites was 7.2% under the bias voltage of 1.0 kV/mm and the energy density was 0.36 J/cm3, making it suitable for embedded capacitor applications. The dielectric properties of PVDF were improved by increasing BST fillers and studying the mechanism of interface reaction.

Original languageEnglish
Pages (from-to)686-692
Number of pages7
JournalJournal of Alloys and Compounds
Volume619
DOIs
StatePublished - 15 Jan 2015

Keywords

  • Composites
  • Dielectric properties
  • Energy storage
  • Maxwell model
  • Tunability

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