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Dielectric properties of CB@TiO2/BaTiO3/epoxy composites

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Abstract

High-k (High permittivity) dielectric composites with low dielectric loss exhibit great potential applications in embedded capacitors and energy storage systems. In this study, CB@TiO2 core–shell particles and BaTiO3 powder were incorporated into the epoxy matrix to fabricate three-phase composites. Morphology of CB@TiO2 particles and dielectric properties of CB@TiO2/BaTiO3/epoxy composites were investigated. Results showed that the dielectric properties of the composites can be improved by the addition of CB@TiO2 particles. The dielectric constant of the composites with 30 vol% BaTiO3 and 20 vol% CB@TiO2 can reach 32.14 at the frequency of 1 kHz while the dielectric loss (tanδ) of the composites still keeps low (0.016 at 1 kHz). Additionally, the positive effect of surface coating on the application of conductive filler is indicated by the results.

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Authors and Affiliations

  1. School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, People’s Republic of China

    Xin Wang & Zewei Li

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  1. Xin Wang
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  2. Zewei Li
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Correspondence to Zewei Li.

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Wang, X., Li, Z. Dielectric properties of CB@TiO2/BaTiO3/epoxy composites. J Mater Sci: Mater Electron 28, 6071–6078 (2017). https://doi.org/10.1007/s10854-016-6283-6

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  • DOI: https://doi.org/10.1007/s10854-016-6283-6

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