Dielectric properties of poly(vinylidene fluoride) nanocomposites filled with surface coated BaTiO{sub 3} by SnO{sub 2} nanodots
- Laboratory of Dielectric Polymer Materials and Devices, Department of Polymer Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China)
- Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong (China)
SnO{sub 2} nanoparticles with an average diameter of about 4 nm were coated on the surface of BaTiO{sub 3} (BT) (∼100 nm) by chemical treatment. With the introduction of BT@SnO{sub 2}, the dielectric permittivity of poly(vinylidene fluoride) (PVDF) composite was significantly increased to 90 at 10{sup 3} Hz, which is ∼40% higher than that of the BT/PVDF composites. It was attributed to the enhanced interfacial polarization in the interlayers between BT and PVDF due to the addition of SnO{sub 2} nanodots. The distance of SnO{sub 2} nanodots on the adjacent BT surfaces is close enough for the electron transport in the matrix by tunneling effect. Besides, the semiconductive SnO{sub 2} leads to the weak insulating-conducting transition close to the percolation threshold.
- OSTI ID:
- 22283103
- Journal Information:
- Applied Physics Letters, Vol. 104, Issue 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
Achieving Flat-on Primary Crystals by Nanoconfined Crystallization in High-Temperature Polycarbonate/Poly(vinylidene fluoride) Multilayer Films and Its Effect on Dielectric Insulation
Electrospun montmorillonite modified poly(vinylidene fluoride) nanocomposite separators for lithium-ion batteries