Maxwell-Wagner Polarization Characteristics in BaTiO<sub>3</sub>/PVDF Nanocomposites

LUO Tianming; NI Xuefeng; LIN Hao; JIANG Shengbao; ZHAO Peng; OUYANG Benhong

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Maxwell-Wagner Polarization Characteristics in BaTiO₃/PVDF Nanocomposites

更新时间：2025-12-08

- Maxwell-Wagner Polarization Characteristics in BaTiO₃/PVDF Nanocomposites
- Vol. 45, Issue 10, Pages: 3240-3246(2019)
- 作者机构：
  
  中国电力科学研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：31 October 2019，
  
  Published：2019
- 稿件说明：
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LUO Tianming, NI Xuefeng, LIN Hao, et al. Maxwell-Wagner Polarization Characteristics in BaTiO₃/PVDF Nanocomposites[J]. 2019, 45(10): 3240-3246.
DOI：

LUO Tianming, NI Xuefeng, LIN Hao, et al. Maxwell-Wagner Polarization Characteristics in BaTiO₃/PVDF Nanocomposites[J]. 2019, 45(10): 3240-3246. DOI：

摘要

纳米复合材料具有成为高储能密度电介质的潜质

在脉冲和储能领域拥有巨大应用潜力

为此利用XRD、DSC和介电谱对BaTiO

/α–PVDF、BaTiO

/γ–PVDF复合介质的基体结晶情况和介电特性进行了分析。在室温0.1 Hz条件下

BaTiO

体积分数为10%的BaTiO

/α–PVDF介质相对介电常数为30

BaTiO

体积分数为10%的BaTiO

/γ–PVDF介质相对介电常数达52

γ相复合介质介电常数要越高于α复合介质

说明在低填充量下BaTiO

/PVDF复合介质中基体晶形特性将对Maxwell-Wagner极化强度起主要作用

并利用一维结晶分布模型对复合介质中界面密度进行表征

结合复合介质损耗峰的位置

发现界面密度与Maxwell-Wagner界面极化松弛时间存在明显负相关性

为利用Maxwell-Wagner极化调节纳米复合电介质的低频介电特性提供了方法。

Abstract

Nanocomposite has potential to become high energy density dielectrics

hence it has huge potential in impulse and energy storage fields. Consequently

we analyzed the crystalline behaviors and dielectric characteristics of BaTiO

/α–PVDF and BaTiO

/γ–PVDF nanocomposite matrices through XRD

DSC

and dielectric spectrum. The results showed that the permittivity of 10%BaTiO

/α–PVDF was 30; however

the permittivity of 10%BaTiO

/γ–PVDF was 52 at room temperature which was much higher than that of α phase nancomposites. The results also showed that

in low filler volume BaTiO

/PVDF composites

the crystalline properties played a main

role in Maxwell-Wagner polarization intensity. Utilizing one-dimension crystal distribution model

we characterized the density of boundary in nanocomposites. According to the site of loss peak

we found there was negative relation between density of boundary in nanocomposites and Maxwell-Wagner polarization relaxation time. The conclusion can provide a method to control nanocomposites’ dielectric characteristics under low frequent using Maxwell-Wagner polarization.

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Related Institution

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Maxwell-Wagner Polarization Characteristics in BaTiO3/PVDF Nanocomposites

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摘要

Abstract

关键词

Keywords

references

Maxwell-Wagner Polarization Characteristics in BaTiO₃/PVDF Nanocomposites