Twin-coated skeleton PEDOT: PSS/MXene/para-aramid nanofibers hybrid aerogel with efficient EMI shielding performance and tunable power coefficient

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2025-03-05 DOI:10.1007/s42114-025-01290-5

Fengfeng Jia, Zhaoqing Lu, Tao Huang, Mingyuan Xu, Xiaoxu Xu, Zizhan Guo, Shan Wang, Jiayue Dong, Yajie Kou, Li Hua

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Abstract

The extensive use of wireless communication devices has resulted in severe electromagnetic interference (EMI), which has driven the need for advanced EMI shielding materials. In this study, a twin-coated skeleton hybrid aerogel was constructed from para-aramid nanofibers (p-ANFs), MXene (Ti₃C₂T_x) flakes, and poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) chains via a freeze-drying route. The robust chains of p-ANFs established a skeleton with a unique porous structure and reversible compressibility. The twin-coated cloth was composed of 28 wt% PEDOT:PSS and 20 wt% MXene, which endowed the PEDOT:PSS/MXene/p-ANFs hybrid aerogel with efficient EMI shielding properties. The shielding effectiveness (SE) and specific shielding effectiveness (SEE/t) in the X band (8.2–12.4 GHz) reached 41.27 dB and 3063.7 dB·cm²·g⁻¹, respectively. Interestingly, the EMI shielding capacity was controlled by the PEDOT:PSS and MXene contents and the PEDOT:PSS/MXene ratio. Moreover, the twin-coated hybrid aerogel exhibited outstanding compressive resilience, with a maximum compressive stress of 61.72 kPa under strain of 60% after 500 cycles. In addition, the relationship between the structure deformation and power coefficient of aerogels was constructed. Thus, this study provides a feasible route for fabricating aerogels with compressibility and efficient EMI shielding performance.

Graphical Abstract

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双涂层骨架PEDOT: PSS/MXene/对芳纶纳米纤维混合气凝胶，具有高效的电磁干扰屏蔽性能和可调的功率系数

无线通信设备的广泛使用导致了严重的电磁干扰（EMI），这推动了对先进的EMI屏蔽材料的需求。本研究以对芳纶纳米纤维（p-ANFs）、MXene （Ti3C2Tx）薄片和聚（3,4-乙烯二氧噻吩）聚苯乙烯磺酸酯（PEDOT:PSS）链为原料，通过冷冻干燥法制备了双涂层骨架杂化气凝胶。坚固的p-ANFs链建立了具有独特多孔结构和可逆压缩性的骨架。双涂层布由28 wt% PEDOT:PSS和20 wt% MXene组成，使PEDOT:PSS/MXene/p-ANFs混合气凝胶具有高效的电磁干扰屏蔽性能。X波段（8.2 ~ 12.4 GHz）的屏蔽效能SE和比屏蔽效能SEE/t分别达到41.27 dB和3063.7 dB·cm2·g−1。有趣的是，电磁干扰屏蔽能力受PEDOT:PSS和MXene含量以及PEDOT:PSS/MXene比值的控制。此外，双包覆混合气凝胶表现出优异的压缩弹性，在60%的应变下，循环500次后最大压缩应力为61.72 kPa。此外，还建立了气凝胶结构变形与功率系数之间的关系。因此，本研究为制备具有可压缩性和高效电磁干扰屏蔽性能的气凝胶提供了一条可行的途径。图形抽象

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.