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首页> 外文期刊>Applied Surface Science >Enhanced dielectric and energy storage properties of BaTiO_3 nanofiber/ polyimide composites by controlling surface defects of BaTiO_3 nanofibers
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Enhanced dielectric and energy storage properties of BaTiO_3 nanofiber/ polyimide composites by controlling surface defects of BaTiO_3 nanofibers

机译：通过控制BATIO_3纳米纤维的表面缺陷，增强BATIO_3纳米纤维/聚酰亚胺复合材料的介电和储能性能

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摘要

BaTiO3 (BT) nanofibers with different surface defects were prepared by electrospinning process through controlling the sintering atmospheres (Air, N-2 and H-2), and introduced into polyimide (PI) matrix to form composite films. The effects of different surface defects on dielectric and energy storage properties of PI composites were systematically investigated. The results showed that the fabricated composite films under a reducing (H-2) atmosphere exhibited excellent dielectric properties, compared with that under Air and O-2. The dielectric constant (epsilon(r)) of PI composite films with 20 wt% BT-fibers reached up to 17.6, while maintaining lower loss (tg delta = 0.006@ 100 kHz), which was about four times greater than that of pure PI (epsilon(r) = 4.1). When the content of BT-fiber was up to 15 wt%, the composite film exhibited a maximum energy storage density of U-e = 6.12 J/cm(3). These results provide an effective method to tune the dielectric and energy storage properties of ferroelectric/polymer composites.
机译：通过控制烧结大气压（空气，N-2和H-2）并引入聚酰亚胺（PI）基质以形成具有不同表面缺陷的BATIO3（BT）纳米纤维，并将其引入聚酰亚胺（PI）基质中以形成复合膜。系统研究了不同表面缺陷对PI复合材料介质和能量储存性能的影响。结果表明，在空气和O-2下，还原（H-2）大气下的制造复合膜表现出优异的介电性能。 PI复合薄膜的介电常数（ε（R）），20wt％BT纤维达到高达17.6，同时保持较低的损失（Tg delta = 0.006 kHz），其比纯PI大约四倍（epsilon（r）= 4.1）。当BT-纤维的含量高达15wt％时，复合膜表现出U-E = 6.12J / cm（3）的最大能量储存密度。这些结果提供了一种有效的方法来调整铁电/聚合物复合材料的介质和储能性能。

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  • 来源
    《Applied Surface Science》 |2020年第31期|144243.1-144243.9|共9页
  • 作者

    Wan Baoquan; Li Haiyu; Xiao Yunhui; Yue Shuangshuang; Liu Yunying; Zhang Qiwei;

  • 作者单位

    Inner Mongolia Univ Sci & Technol Inner Mongolia Key Lab Ferroelect Related New Ene 7 Arding St Kun Dist 014010 Baotou Peoples R China;

    Inner Mongolia Univ Sci & Technol Inner Mongolia Key Lab Ferroelect Related New Ene 7 Arding St Kun Dist 014010 Baotou Peoples R China;

    Inner Mongolia Univ Sci & Technol Inner Mongolia Key Lab Ferroelect Related New Ene 7 Arding St Kun Dist 014010 Baotou Peoples R China;

    Inner Mongolia Univ Sci & Technol Inner Mongolia Key Lab Ferroelect Related New Ene 7 Arding St Kun Dist 014010 Baotou Peoples R China;

    Inner Mongolia Univ Sci & Technol Sch Chem & Chem Engn 7 Arding St Kun Dist 014010 Baotou Peoples R China;

    Inner Mongolia Univ Sci & Technol Inner Mongolia Key Lab Ferroelect Related New Ene 7 Arding St Kun Dist 014010 Baotou Peoples R China|Inner Mongolia Univ Sci & Technol Key Lab Integrated Exploitat Bayan Obo Multimet R Baotou 014010 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    BaTiO3 nanofibers; Surface defect; Polyimide; Energy storage;

    机译：BATIO3纳米纤维;表面缺陷;聚酰亚胺;储能;

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