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首页> 外文期刊>RSC Advances >Enhanced dielectric and ferroelectric properties in NaTNO/PVDF nanocomposites: a new flexible material for capacitor application
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Enhanced dielectric and ferroelectric properties in NaTNO/PVDF nanocomposites: a new flexible material for capacitor application

机译：NaTNO / PVDF纳米复合材料中增强的介电和铁电性能：一种用于电容器的新型柔性材料

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摘要

Polymer nanocomposites (PNC) showing improved physical properties are emerging as novel functional materials because of their adaptable physical properties for technological applications. We synthesized a new PNC system composed of an insulating ferroelectric poly-vinylidene fluoride (PVDF) host and a high dielectric semiconducting NaxTiyNi1-x-yO (Na and Ti co-doped NiO with x = 0.05, 0.15 and y = 0.02) oxide of variable particle sizes (similar to 0.5-0.6 mu m to similar to 80-90 mu m) as filler. The PNC system exhibited excellent ferroelectric behavior as well as tensile strength with a low percolation threshold (f(c)). The observed large enhancement of room temperature effective dielectric permittivity (epsilon(eff) similar to 600-750 about 60-75 times that of host PVDF matrix) along with a very low dielectric loss of <= 0.18 at 1 kHz, high dielectric breakdown voltage (>140 kV mm(-1)) and saturation polarization (similar to 10 mu C cm(-2)) near f(c) distinguished these PNC films as suitable candidates for capacitor applications in devices.
机译：显示出改善的物理性能的聚合物纳米复合材料（PNC）由于其对技术应用的适应性物理性能而成为新型的功能材料。我们合成了一个新的PNC系统，该系统由绝缘铁电聚偏二氟乙烯（PVDF）主体和高介电半导体NaxTiyNi1-x-yO（Na和Ti共掺杂的NiO，x = 0.05、0.15和y = 0.02）氧化物组成。各种粒径（约0.5-0.6微米至约80-90微米）的填料。 PNC系统表现出出色的铁电性能以及低渗透阈值（f（c））的拉伸强度。观察到的室温有效介电常数的大幅提高（ε（eff）与600-750相似，约为主PVDF矩阵的60-75倍），并且在1 kHz时具有非常低的介电损耗<= 0.18，介电击穿电压高（> 140 kV mm（-1））和f（c）附近的饱和极化（类似于10μC cm（-2））使这些PNC薄膜成为器件中电容器应用的合适候选者。

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