Issue 1, 2018, Issue in Progress

Core–shell structured Ag@C nanocables for flexible ferroelectric polymer nanodielectric materials with low percolation threshold and excellent dielectric properties

Abstract

Uniform core–shell structured Ag@C nanocables (Ag@C-NC) with high aspect ratio (>600) were synthesized by a one-step hydrothermal method, and their PVDF nanocomposites were prepared by a solution casting method. The crystallization properties, thermal stability and dielectric properties of the resulting Ag@C-NC/PVDF nanocomposites were fully investigated. Because of the presence of the carbonaceous shell, the Ag@C-NC exhibits strong interfacial adhesion with the PVDF matrix, leading to a low percolation threshold and low dielectric loss of the resulting nanocomposites. Near the percolation threshold (fc < 5.49 vol%), high dielectric constant and low dielectric loss were simultaneously achieved in the Ag@C-NC/PVDF nanocomposites. For instance, at 1 kHz, the nanocomposites with 6.45 vol% loading of Ag@C-NC possess a dielectric constant of 295 and a dielectric loss of 0.083. More importantly, the dielectric properties of the resulting Ag@C-NC/PVDF nanocomposites exhibit weak frequency dependence and miniscale temperature dependence.

Graphical abstract: Core–shell structured Ag@C nanocables for flexible ferroelectric polymer nanodielectric materials with low percolation threshold and excellent dielectric properties

Supplementary files

Article information

Article type
Paper
Submitted
22 Nov 2017
Accepted
12 Dec 2017
First published
15 Dec 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2018,8, 1-9

Core–shell structured Ag@C nanocables for flexible ferroelectric polymer nanodielectric materials with low percolation threshold and excellent dielectric properties

Z. Chen, H. Li, G. Xie and K. Yang, RSC Adv., 2018, 8, 1 DOI: 10.1039/C7RA12686G

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