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首页> 外文期刊>RSC Advances >Core-shell structured Ag@C nanocables for flexible ferroelectric polymer nanodielectric materials with low percolation threshold and excellent dielectric properties
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Core-shell structured Ag@C nanocables for flexible ferroelectric polymer nanodielectric materials with low percolation threshold and excellent dielectric properties

机译：核心壳结构Ag @ C纳米纳米型柔性铁电聚合物纳米电材料，具有低渗透阈值和优异的介电性能

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摘要

Uniform core-shell structured Ag@C nanocables (Ag@C-NC) with high aspect ratio ( 600) were synthesized by a one-step hydrothermal method, and their PVDF nanocomposites were prepared by a solution casting method. The crystallization properties, thermal stability and dielectric properties of the resulting Ag@C-NC/PVDF nanocomposites were fully investigated. Because of the presence of the carbonaceous shell, the Ag@C-NC exhibits strong interfacial adhesion with the PVDF matrix, leading to a low percolation threshold and low dielectric loss of the resulting nanocomposites. Near the percolation threshold (fc 5.49 vol%), high dielectric constant and low dielectric loss were simultaneously achieved in the Ag@ C-NC/PVDF nanocomposites. For instance, at 1 kHz, the nanocomposites with 6.45 vol% loading of Ag@C-NC possess a dielectric constant of 295 and a dielectric loss of 0.083. More importantly, the dielectric properties of the resulting Ag@C-NC/PVDF nanocomposites exhibit weak frequency dependence and miniscale temperature dependence.
机译：通过一步水热法合成具有高纵横比（＆ 600）的均匀芯壳结构（Ag @ C-NC），通过溶液浇铸方法制备它们的PVDF纳米复合材料。完全研究了所得Ag @ C-NC / PVDF纳米复合材料的结晶性能，热稳定性和介电性能。由于存在含碳壳的存在，Ag @ C-NC与PVDF基质表现出强烈的界面粘附，导致低渗透阈值和所得纳米复合材料的低介电损耗。在渗透阈值附近（Fc＆ 5.49体积％），在Ag @ c-nc / pvdf纳米复合材料中同时实现高介电常数和低介电损耗。例如，在1 kHz，纳米复合材料具有6.45体积％的Ag @ C-NC具有295的介电常数，介电损耗为0.083。更重要的是，所得Ag @ C-NC / PVDF纳米复合材料的电介质性质表现出弱频率依赖性和Miniscale温度依赖性。

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  • 来源
    《RSC Advances》 |2018年第1期|共9页
  • 作者

    Chen Zhihui; Li Hengfeng; Xie Guangyou; Yang Ke;

  • 作者单位

    Cent S Univ Sch Mat Sci &

    Engn Changsha 410083 Peoples R China;

    Cent S Univ Sch Mat Sci &

    Engn Changsha 410083 Peoples R China;

    Cent S Univ Sch Mat Sci &

    Engn Changsha 410083 Peoples R China;

    Cent S Univ Sch Mat Sci &

    Engn Changsha 410083 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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