Journal
RSC ADVANCES
Volume 5, Issue 88, Pages 72090-72098Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra10438f
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Funding
- State Key Development Program for Basic Research of China [2012CB933200]
- National Natural Science Foundation of China [51172008, 51002006]
- National Natural Science Fund Innovation Group [51221163]
- Research Fund for Doctor Station - Ministry of Education of China [20111102110035]
- Fundamental Research Funds for the Central Universities
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BaTiO3/poly(vinylidene fluoride) (BT/PVDF) composite material, a promising dielectric material for capacitor, has recently attracted much attention because of the promising dielectric performance and its abundant availability. Insufficient control of the hierarchal morphology of the blend has yielded a precipitous decline in breakdown strength at high BT nanoparticles volume fractions. Here, we demonstrate that breakdown strength and energy storage density can be increased up to higher value by creating uniform distribution of low content of BT nanoparticles in PVDF matrix. The dielectric properties of BT/PVDF nanocomposite were measured as a function of BT nanoparticles loading. The nanocomposite displayed a 150% increase in dielectric breakdown strength and energy density increased to more than triple that of the pure PVDF even at the 1 vol% BT nanoparticles loading. It was attributed to the uniform distribution of low content BT nanoparticles in PVDF matrix, which lead to superior dielectric breakdown strength and energy storage density than those of composites filled with high content of BT nanoparticles. Furthermore, the nanocomposites films with low content of fillers were more flexible and cost-effective. The finding based on this research provides a low-cost method to achieve high performance in capacitor.
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