Development of PVDF/PMMA-Cu nanocomposites with enhanced dielectric properties and energy storage density for capacitor applications

IF 3.6 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2025-03-10 DOI:10.1002/vnl.22211

A. A. Al-Muntaser, Eman Alzahrani, Asmaa Al-Rasheedi, Enam A. Al-Harthy, Reem Alwafi, G. M. Asnag, A. E. Tarabiah, Abdu Saeed

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引用次数: 0

Abstract

This study aims to develop novel PVDF/PMMA-based polymer nanocomposites (PNCs) filled with copper nanoparticles (Cu NPs) for capacitive energy storage applications. The unique conductive properties of Cu NPs were utilized to enhance the dielectric and energy storage properties of the polymer blend significantly. Cu NPs were incorporated at low concentrations (1.5 and 3 wt.%), providing a cost-effective approach to improving material performance. Structural analyses using XRD and FTIR revealed that Cu NPs disrupt the crystalline structure of the polymer blend, increasing the amorphous phase and facilitating charge carrier mobility. UV/visible spectroscopy demonstrated a reduction in the optical bandgap energy, indicating strong electronic interactions between Cu NPs and the polymer matrix. Impedance spectroscopy and dielectric measurements confirmed that Cu NPs enhance interfacial polarization, resulting in higher dielectric constants and improved conductivity at low frequencies while maintaining low dielectric loss. Notably, the 3 wt.% Cu NP nanocomposite achieved an energy storage density of ~3.8 × 10⁻³ J/m³ at low frequencies, more than double that of the pure PVDF/PMMA blend. These findings indicate that PVDF/PMMA-Cu nanocomposites could be promising materials for capacitive energy storage applications.

Highlights

PVDF/PMMA/Cu nanocomposites were prepared using the solution-casting method.
CuNPs in PVDF/PMMA blends enhance optical, structural, and electrical properties.
Improved dielectric properties and conductivity in PNCs were demonstrated.
Fabricated capacitors exhibited improved performance and higher energy storage.

Abstract Image

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具有增强介电性能和储能密度的PVDF/PMMA-Cu纳米复合材料的研制

本研究旨在开发新型的PVDF/ pmma基聚合物纳米复合材料（pnc），填充铜纳米颗粒（Cu NPs）用于电容储能应用。利用铜纳米粒子独特的导电性能，显著提高了聚合物共混物的介电性能和储能性能。铜NPs以低浓度（1.5%和3% wt.%）掺入，为提高材料性能提供了经济有效的方法。利用XRD和FTIR进行的结构分析表明，Cu NPs破坏了聚合物共混物的晶体结构，增加了非晶相，促进了载流子的迁移率。紫外/可见光谱显示光学带隙能量减少，表明Cu NPs与聚合物基体之间存在强电子相互作用。阻抗谱和介电测量证实，Cu NPs增强了界面极化，导致更高的介电常数和低频时的电导率提高，同时保持低介电损耗。值得注意的是，3wt。% Cu NP纳米复合材料在低频下的储能密度为~3.8 × 10−3 J/m3，是纯PVDF/PMMA共混材料的两倍多。这些发现表明，PVDF/PMMA-Cu纳米复合材料在电容储能领域具有广阔的应用前景。采用溶液浇铸法制备了PVDF/PMMA/Cu纳米复合材料。PVDF/PMMA共混物中的CuNPs增强了光学、结构和电学性能。证明了pnc的介电性能和导电性得到了改善。制备的电容器表现出更高的性能和更高的能量存储。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Vinyl & Additive Technology 工程技术-材料科学：纺织

CiteScore

5.40

自引率

14.80%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.