Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/61549
Title: Enhancement of dielectric performance upto GHz of the composites with polymer encapsulated hybrid BaTiO3-Cu as fillers : multiple interfacial polarizations playing a key role
Authors: Li, C
Yu, S
Luo, S
Yang, W
Ge, Z
Huang, H 
Sun, R
Wong, CP
Issue Date: 2016
Publisher: Royal Society of Chemistry
Source: RSC advances, 2016, v. 6, no. 43, p. 36450-36458 How to cite?
Journal: RSC advances 
Abstract: Cu nanoparticles with diameters of 15-25 nm were grown discretely on the surface of BaTiO3 (about 100 nm) via a hydrothermal method, and a polyethylene glycol 4000 layer was coated on the surface of the obtained BT-Cu hybrid particles. The PEG layer will serve as a robust interface layer to suppress the mobilization of charge carriers and protect Cu from oxidation. The BT-Cu particles were loaded as fillers in the matrix of polyvinylidene fluoride (PVDF) to fabricate the BT-Cu/PVDF composites. Microstructure and dielectric performance have been investigated. The results showed that the relative permittivity (ϵr) of the composites increased prominently with the loading amount and meanwhile the dielectric loss tangent was suppressed at a low level. For instance, the permittivity of BT-Cu/PVDF with the volume fraction of 53.7% reached 150 with a low loss of 0.16 at 1 kHz. The permittivities maintained high values of over 55 and the dielectric loss was less than 0.05 upto 1 GHz. Investigation on the polarization mechanisms has been conducted and the interfacial polarization between different phases should account for the high dielectric permittivity upto GHz. The energy storage characteristics were also studied.
URI: http://hdl.handle.net/10397/61549
EISSN: 2046-2069
DOI: 10.1039/c6ra03469a
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

10
Last Week
0
Last month
Citations as of Aug 14, 2017

WEB OF SCIENCETM
Citations

9
Last Week
0
Last month
Citations as of Aug 13, 2017

Page view(s)

27
Last Week
0
Last month
Checked on Aug 13, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.