Journal
APPLIED PHYSICS LETTERS
Volume 101, Issue 15, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.4760228
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Funding
- National Basic Research Program of China [2009CB623303]
- NSF of China [51222204, 51102142, 50921061]
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Ba0.6Sr0.4TiO3 (BST) nanofibers prepared via electrospinning and modified by dopamine are used as dielectric fillers in polyvinylidene fluoride (PVDF)-based composites. With 4.4 vol. % of BST nanofibers, the extractable energy density of the BST/PVDF composites is more than doubled as compared with pure PVDF matrix. Such significant enhancement is attributed to the combined effect of both surface modification by dopamine and large aspect ratio of the BST nanofibers. Paraelectric or anti-ferroelectric fillers of large aspect ratio may serve as a general strategy for enhanced electric energy density in polymer composites. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4760228]
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