In situ synthesized low-doped polyaniline/WS2 nanocomposites for charge storage applications: structural, morphological, electrical, and dielectric modulus analysis

IF 2.9 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

The European Physical Journal Plus Pub Date : 2025-10-06 DOI:10.1140/epjp/s13360-025-06832-w

Muhammad Riaz, Muhammad Waqas Mukhtar, Syed Mansoor Ali, Rajeh Alotaibi, Syed Danish Ali, Muhammad Asif Shakoori

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引用次数: 0

Abstract

Polyaniline (PANI) was synthesized via in situ polymerization route, and nanocomposites were prepared by incorporating tungsten sulfides (WS₂) nanoparticles at varying concentrations (1 wt%, 2 wt%, and 5 wt%), to enhance their charge storage capabilities. Structural and morphological characteristics were investigated using XRD, FE-SEM, FTIR, TGA, BET, I–V measurements, and dielectric analysis. XRD confirmed the polycrystalline nature of all the nanocomposites, while FE-SEM supported by BET, revealed porous and interconnected morphological texture, beneficial for an effective charge transport mechanism. FTIR spectra showed prominent C = C and C = N stretching vibrations associated with the benzenoid and quinoid rings, indicating strong interfacial interactions between PANI and WS₂ nanoparticles. TGA results demonstrated enhanced thermal stability in all nanocomposites compared to pure PANI. Dielectric measurements (20 Hz–1 MHz) revealed significant enhancement in permittivity for all nanocomposites, followed by frequency-dependent decline consistent well with Maxwell–Wagner interfacial polarization. I–V characteristics further confirmed the ohmic behavior of the samples. Overall, the enhanced dielectric response and superior thermal stability highlight the suitability of PANI/WS₂ nanocomposites for high-performance charge storage and related electronic applications.

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原位合成低掺杂聚苯胺/WS2纳米复合材料的电荷存储应用：结构、形态、电学和介电模量分析

采用原位聚合的方法合成了聚苯胺（PANI），并通过添加不同浓度（1 wt%、2 wt%和5 wt%）的硫化钨（WS2）纳米复合材料来增强其电荷存储能力。采用XRD、FE-SEM、FTIR、TGA、BET、I-V测量和介电分析等手段研究了材料的结构和形态特征。XRD证实了复合材料的多晶性质，而BET支撑下的FE-SEM则揭示了多孔且相互连接的形态结构，有利于有效的电荷输运机制。FTIR光谱显示，苯环和醌环存在明显的C = C和C = N伸缩振动，表明聚苯胺和WS2纳米颗粒之间存在强烈的界面相互作用。TGA结果表明，与纯聚苯胺相比，所有纳米复合材料的热稳定性都有所提高。介电测量（20 Hz-1 MHz）显示，所有纳米复合材料的介电常数都有显著的增强，随后是频率相关的下降，与麦克斯韦-瓦格纳界面极化一致。I-V特性进一步证实了样品的欧姆行为。总的来说，增强的介电响应和优越的热稳定性突出了PANI/WS2纳米复合材料在高性能电荷存储和相关电子应用中的适用性。

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来源期刊

The European Physical Journal Plus PHYSICS, MULTIDISCIPLINARY-

CiteScore

5.40

自引率

8.80%

发文量

1150

审稿时长

4-8 weeks

期刊介绍： The aims of this peer-reviewed online journal are to distribute and archive all relevant material required to document, assess, validate and reconstruct in detail the body of knowledge in the physical and related sciences. The scope of EPJ Plus encompasses a broad landscape of fields and disciplines in the physical and related sciences - such as covered by the topical EPJ journals and with the explicit addition of geophysics, astrophysics, general relativity and cosmology, mathematical and quantum physics, classical and fluid mechanics, accelerator and medical physics, as well as physics techniques applied to any other topics, including energy, environment and cultural heritage.