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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Large Enhancement in Polarization Response and Energy Storage Properties of Poly(vinylidene fluoride) by Improving the Interface Effect in Nanocomposites
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Large Enhancement in Polarization Response and Energy Storage Properties of Poly(vinylidene fluoride) by Improving the Interface Effect in Nanocomposites

机译：通过改善纳米复合材料的界面效应，大大提高聚偏氟乙烯的极化响应和储能性能

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摘要

A novel strategy to improve the interface effect of BaTiO3 (BT)/polyvinylidene fluoride (PVDF) nanocomposites is developed to achieve high energy density. The surface of BT is first hydroxylated by H2O2, then modified with a titanate coupling agent DN-101. BT modified with DN-101 is also considered as a control group. Results show that the polarization response of nanocomposites with 10 vol % H2O2-DN-101-BaTiO2 (D-h-BT) is largely enhanced, which is 18% bigger than that of the nanocomposites vdth 10 vol % DN-101-BaTiO2 (D-BT) at 240 MV m~(-1). The dielectric breakdown strength is also improved from 240 MV m~(-1) of nanocomposites with 10 vol % D-BT to 260 MV m~(-1) of nanocomposites with 10 vol % D-h-BT, which makes the maximum stored energy density increase from 6.5 to 9.01 J cm~(-1), and the discharged energy density of the composites improved from 3.01 to 4.31 J cm~(-1). The findings based on this research are applicable to various nanofillers and polymer matrix, which provides a simple but effective way for nanocomposites with enhanced dielectric properties in next-generation electric and electronic industry.
机译：开发了一种提高BaTiO3（BT）/聚偏二氟乙烯（PVDF）纳米复合材料界面效应的新策略，以实现高能量密度。 BT表面首先被H2O2羟基化，然后用钛酸酯偶联剂DN-101改性。 DN-101修饰的BT也被视为对照组。结果表明，含有10％（体积）H2O2-DN-101-BaTiO2（Dh-BT）的纳米复合材料的极化响应大大增强，比10％（体积）DN-101-BaTiO2（D-BT）的纳米复合材料的极化响应大18％。 BT）在240 MV m〜（-1）。介电击穿强度也从240 MV m〜（-1）的D-BT含量为10体积％的纳米复合材料提高到260 MV m〜（-1）的Dh-BT含量为10体积％的纳米复合材料，从而最大程度地存储了能量密度从6.5增加到9.01 J cm〜（-1），复合材料的放电能量密度从3.01提高到4.31 J cm〜（-1）。基于这项研究的发现适用于各种纳米填料和聚合物基质，为下一代电气和电子工业中具有增强介电性能的纳米复合材料提供了一种简单而有效的方法。

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