Largely enhanced energy density in flexible P(VDF-TrFE) nanocomposites by surface-modified electrospun BaSrTiO3 fibers

被引：149

作者：

Hu, Penghao ^{[1
]}

Song, Yu ^{[1
]}

Liu, Haiyang ^{[1
]}

Shen, Yang ^{[1
]}

Lin, Yuanhua ^{[1
]}

Nan, Ce-Wen ^{[1
]}

机构：

[1] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 05期

关键词：

DIELECTRIC-PROPERTIES; POLYMER NANOCOMPOSITES; BREAKDOWN STRENGTH; NANOFIBERS; MICROSTRUCTURE; COMPOSITES; STORAGE;

D O I：

10.1039/c2ta00948j

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

By using Bi2O3-doped Ba0.3Sr0.7TiO3 (BSBT) fibers prepared via electrospinning and modified by dopamine as dielectric fillers, BSBT/P(VDF-TrFE) flexible nanocomposites are fabricated by solution casting. A low loading of BSBT nanofibers leads to a large increase in the dielectric constant and breakdown strength. In particular, the discharged energy density of the nanocomposites is significantly enhanced several times in comparison with the pure polymer matrix. The enhanced breakdown strength and discharged energy density could be attributed to the combined effects of the surface modification, large aspect ratio and paraelectric polarization behavior of the BSBT fibers. The present work indicates the enhancing potential of energy density on the polymer-ceramic composite by the paraelectric nanofiber fillers.

引用

页码：1688 / 1693

页数：6

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