| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10624860 | Ceramics International | 2014 | 8 Pages |
Abstract
A high energy-storage density ceramic-polymer nanocomposite is fabricated by incorporating high aspect ratio functionalized BaTiO3 nanofibers (BT NF) prepared via electrospinning into a polyvinylidene-fluoride (PVDF) matrix. The functionalized BT NF by 3-aminopropyltriethoxysilane (APS) not only exhibited excellent compatibility with poly(vinylidene fluoride) (PVDF), but significantly enhanced the dielectric properties of the nanocomposites. The dielectric constant of the nanocomposite reached up to 24 with a dielectric loss of 0.018 at 1Â kHz with a BT NF-APS concentration of 7.5Â vol%. The maximal energy-storage density in the nanocomposite with 2.5Â vol% BT NF-APS is about 5.6Â J/cm3 at 3300Â kV/cm, which is over 220% higher than that of the PVDF at the same electric field. The enhanced energy-storage density could be attributed to the combined effects of the APS surface modification, large aspect ratio and ferroelectric polarization behavior of the BT NF.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Shaohui Liu, Shuangxi Xue, Wenqin Zhang, Jiwei Zhai,