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Polymers 2016, 8(2), 45; doi:10.3390/polym8020045

Dielectric Properties and Energy Storage Densities of Poly(vinylidenefluoride) Nanocomposite with Surface Hydroxylated Cube Shaped Ba0.6Sr0.4TiO3 Nanoparticles

1
Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Functional Materials Research Laboratory, School of Materials Science & Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
2
School of Science, Henan Institute of Engineering, Zhengzhou 451191, China
3
School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
*
Author to whom correspondence should be addressed.
Academic Editor: Frank Wiesbrock
Received: 30 December 2015 / Revised: 26 January 2016 / Accepted: 27 January 2016 / Published: 16 February 2016
(This article belongs to the Special Issue Nano- and Microcomposites for Electrical Engineering Applications)
View Full-Text   |   Download PDF [4670 KB, uploaded 16 February 2016]   |  

Abstract

Ceramic-polymer nanocomposites, consisting of surface hydroxylated cube-shaped Ba0.6Sr0.4TiO3 nanoparticles (BST–NPs) as fillers and poly(vinylidenefluoride) (PVDF) as matrix, have been fabricated by using a solution casting method. The nanocomposites exhibited increased dielectric constant and improved breakdown strength. Dielectric constants of the nanocomposite with surface hydroxylated BST–NPs (BST–NPs–OH) were higher as compared with those of their untreated BST–NPs composites. The sample with 40 vol % BST–NPs–OH had a dielectric constant of 36 (1 kHz). Different theoretical models have been employed to predict the dielectric constants of the nanocomposites, in order to compare with the experimental data. The BST–NPs–OH/PVDF composites also exhibited higher breakdown strength than their BST–NP/PVDF counterparts. A maximal energy density of 3.9 J/cm3 was achieved in the composite with 5 vol % BST–NPs–OH. This hydroxylation strategy could be used as a reference to develop ceramic-polymer composite materials with enhanced dielectric properties and energy storage densities. View Full-Text
Keywords: dielectric properties; inorganic–organic nanocomposite; surface hydroxylation; energy storage density dielectric properties; inorganic–organic nanocomposite; surface hydroxylation; energy storage density
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Liu, S.; Xiu, S.; Shen, B.; Zhai, J.; Kong, L.B. Dielectric Properties and Energy Storage Densities of Poly(vinylidenefluoride) Nanocomposite with Surface Hydroxylated Cube Shaped Ba0.6Sr0.4TiO3 Nanoparticles. Polymers 2016, 8, 45.

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