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Journal of Materials Science

, Volume 54, Issue 9, pp 7096–7109 | Cite as

Regulating the dielectric property of percolative composites via a core–shell-structured ionic liquid/carbon nanotube hybrid

  • Ye Ren
  • Zheng Zhou
  • Guang-Xin ChenEmail author
  • Qifang LiEmail author
Energy materials
  • 163 Downloads

Abstract

Nanodielectric materials have been extensively studied because of their potential applications in energy conversion and storage systems. However, dielectric materials with high constant, low loss, and high toughness have yet to be developed. In this work, we design and fabricate different core–shell-structured hybrids composed of polymerized imidazolium ionic liquid (PIL) and carbon nanotubes (CNTs). The hybrids exhibit varied structure and coating layer thickness upon adjusting the concentrations of monomer and solvent and is used to fabricate nanodielectric composites. The polymer shell is formed as a part of the composite interface and thus directly alters the interfacial structure. The obtained composites exhibit varied dielectric behaviors over a wide frequency range. The dielectric properties of the composites can be easily tailored by choosing appropriate hybrids and controlling the proportion of fillers. These features render PIL-CNTs/PVDF as a potential high-performance dielectric material for applications in capacitors.

Notes

Acknowledgements

The authors gratefully acknowledge financial support of this work coming from National Natural Science Foundation of China (NSFC) (No. 51573010).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of EducationBeijing University of Chemical TechnologyBeijingPeople’s Republic of China
  2. 2.College of Material Science and EngineeringBeijing University of Chemical TechnologyBeijingPeople’s Republic of China

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