Hydrothermal synthesis of BaTiO3 nanowires for high energy density nanocomposite capacitors
One-dimensional inorganic high- k nanowires (NWs) show a potential of achieving high energy densities in polymer-matrix nanocomposite capacitors. In this study, we investigate a hydrothermal synthesis of BT NWs, by which BT NWs with high aspect ratios of pure phase, [110]-oriented structures were ob...
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Published in | Journal of materials science Vol. 55; no. 16; pp. 6903 - 6914 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
New York
Springer US
01.06.2020
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | One-dimensional inorganic high-
k
nanowires (NWs) show a potential of achieving high energy densities in polymer-matrix nanocomposite capacitors. In this study, we investigate a hydrothermal synthesis of BT NWs, by which BT NWs with high aspect ratios of pure phase, [110]-oriented structures were obtained. The BT NWs are filled in a polyvinylidene fluoride (PVDF) matrix to prepare nanocomposites and their dielectric and energy storage properties are investigated. An enhanced dielectric constant of
ε
r
~ 58 at 100 Hz is achieved in PVDF–BaTiO
3
NWs (30 vol%), while the value is 47 for a traditional composite filled with BT nanoparticles (NPs). Besides, high breakdown strength of
E
b
> 362 MV/m is also achieved in the composites. PVDF–BaTiO
3
NWs nanocomposite exhibits a high discharged energy density of
U
d
~ 12.85 J/cm
3
at 300 MV/m at 100 Hz with a discharge efficiency of 58%. The simulation from the finite element analysis on distributions of voltage and electric displacement is studied and showed the consistency with experimental results. This study demonstrates a facile and large-scale route to the synthesis of BaTiO
3
NWs for making high
ε
r
,
E
b
and
U
d
nanocomposite capacitors. |
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ISSN: | 0022-2461 1573-4803 |
DOI: | 10.1007/s10853-020-04520-x |