Dynamic Pyrolysis of Silver-Enhanced Conductive Porous Membranes: Mechanistic Insights into Electromagnetic Shielding, Joule Heating and Photothermal Efficiency

IF 17.2 1区工程技术 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Fiber Materials Pub Date : 2025-04-07 DOI:10.1007/s42765-025-00540-x

Jiacheng Ma, Miao Wang, Guiqiang Fei, Yifan Kang, Liyuan Guo, Yaofeng Zhu, Huiya Wang, Fan Wu, Yang Bai, Peiyu Cui, Zhuo Chen, Libin Zhao, Wenhuan Huang

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引用次数: 0

Abstract

Silver-based materials are renowned for their superior electrical conductivity and dielectric loss, which enhance electromagnetic (EM) shielding. However, challenges such as poor impedance matching and lack of flexibility limit their practical deployment. Microstructural engineering may hold the key to overcoming these hurdles by allowing precise control over impedance and loss properties, yet developing such materials that are both lightweight and flexible remains a formidable challenge. Herein, we developed a silver-doped flexible electromagnetic (EM) shielding porous membrane (PMA-3-1000) using a dynamic pyrolysis approach applied to a metal-azolate polymer. This method precisely controls porosity and conductivity, enhancing silver integration for exceptional EM shielding, achieving − 57 dB effectiveness and 99.998% efficiency. The membrane also demonstrates excellent performance in Joule heating and rapid photothermal conversion, reaching 110 °C in just 10 s under 1 kW/m². The Ag-doped porous fibers in a 3D dense structure synergistically enhance multi-reflection attenuation and electrical conductivity, while the localized surface plasmon resonance (LSPR) effect from silver nanoparticles boosts Joule heating and photothermal properties. This lightweight and versatile membrane shows immense potential for military, aerospace and other high-performance applications, heralding new opportunities for multifunctional electromagnetic shielding solutions.

Graphical abstract

TOC The utility model pertains to a multifunctional porous nanofiber film that integrates electromagnetic shielding capabilities, Joule heating properties, photothermal characteristics, and light hydrophobicity.

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银增强导电多孔膜的动态热解：电磁屏蔽、焦耳加热和光热效率的机理研究

银基材料以其卓越的导电性和介电损耗而闻名，从而增强了电磁（EM）屏蔽。然而，阻抗匹配差和缺乏灵活性等挑战限制了它们的实际部署。微结构工程可能是克服这些障碍的关键，因为它可以精确控制阻抗和损耗特性，但开发这种既轻便又灵活的材料仍然是一个艰巨的挑战。本文采用动态热解方法制备了一种掺杂银的柔性电磁屏蔽多孔膜（PMA-3-1000）。这种方法可以精确控制孔隙度和导电性，增强银的集成，实现卓越的电磁屏蔽，达到- 57 dB的有效性和99.998%的效率。该膜在焦耳加热和快速光热转换方面也表现出优异的性能，在1kw /m2下仅需10秒即可达到110°C。三维致密结构的ag掺杂多孔纤维协同增强了多次反射衰减和电导率，而银纳米粒子的局部表面等离子体共振（LSPR）效应提高了焦耳加热和光热性能。这种轻质多功能薄膜在军事、航空航天和其他高性能应用中显示出巨大的潜力，预示着多功能电磁屏蔽解决方案的新机遇。图形摘要toc本实用新型是一种集电磁屏蔽能力、焦耳加热性能、光热特性和光疏水性于一体的多功能多孔纳米纤维薄膜。

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来源期刊

Advanced Fiber Materials Multiple-

CiteScore

18.70

自引率

11.20%

发文量

109

期刊介绍： Advanced Fiber Materials is a hybrid, peer-reviewed, international and interdisciplinary research journal which aims to publish the most important papers in fibers and fiber-related devices as well as their applications.Indexed by SCIE, EI, Scopus et al. Publishing on fiber or fiber-related materials, technology, engineering and application.