自组装超薄MXene/纤维素纳米纤维/MXene复合薄膜用于高性能电磁干扰屏蔽

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nano Pub Date : 2023-06-23 DOI:10.1142/s1793292023500510

Jun Li, Lihui Xu, Hong Pan, Liming Wang, Yong Shen

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引用次数: 0

摘要

MXene薄膜具有良好的电磁干扰(EMI)屏蔽性能。然而，ti3c2t[公式:见文]MXene薄膜较差的力学性能和耐久性限制了其商业应用。本文通过简单的真空辅助过滤工艺，成功制备了具有“三明治”结构的超薄柔性导电MXene/纤维素纳米纤维(CNF)/MXene复合薄膜。CNF的加入可以有效地将松散的MXene焊接在一起，从而通过内部空间的多次反射屏蔽更多的电磁微波(emw)，提高复合膜的力学性能。复合膜在超薄厚度(约76 m)下表现出优异的电磁干扰屏蔽效果(高达54.68 dB)和高导电性(高达1610.51 S/m)，这主要归功于层叠层状“三明治”结构，其中CNF与Ti 3c2t[公式:见文]MXene结合。制备的柔性导电复合薄膜具有优异的电磁干扰屏蔽效果和良好的力学性能，在电磁波保护、武器装备和可穿戴电子等领域具有广阔的应用前景。

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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Self-Assembling Ultrathin MXene/Cellulose Nanofiber/MXene Composite Film for High-Performance Electromagnetic Interference Shielding

Ti 3 C 2 T[Formula: see text] MXene films exhibited good electromagnetic interference (EMI) shielding performance. However, the poor mechanical property and durability of Ti 3 C 2 T[Formula: see text] MXene films limited their commercial application. Herein, the ultrathin flexible conductive MXene/cellulose nanofiber (CNF)/MXene composite films with “sandwich” structure were successfully prepared by a simple vacuum-assisted filtration process. The addition of CNF can shield more electromagnetic microwaves (EMWs) via multiple reflections in the inner space and enhance the mechanical property of composite films by effectively welding the loosely MXene together. The composite film exhibited excellent EMI shielding effectiveness (up to 54.68 dB) at an ultrathin thickness (about 76 [Formula: see text]m) as well as high electrical conductivity (up to 1610.51 S/m), which was mainly attributed to the hierarchical lamellar “sandwich” structure, where CNF was bonded to Ti 3 C 2 T[Formula: see text] MXene. The prepared flexible conductive composite films with brilliant EMI shielding effectiveness and good mechanical property possessed promising potential in various fields such as electromagnetic wave protection, weaponry and wearable electronics.

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来源期刊

Nano 工程技术-材料科学：综合

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

1.6 months

期刊介绍： NANO is an international peer-reviewed monthly journal for nanoscience and nanotechnology that presents forefront fundamental research and new emerging topics. It features timely scientific reports of new results and technical breakthroughs and also contains interesting review articles about recent hot issues. NANO provides an ideal forum for presenting original reports of theoretical and experimental nanoscience and nanotechnology research. Research areas of interest include: nanomaterials including nano-related biomaterials, new phenomena and newly developed characterization tools, fabrication methods including by self-assembly, device applications, and numerical simulation, modeling, and theory. However, in light of the current stage development of nanoscience, manuscripts on numerical simulation, modeling, and/or theory only without experimental evidences are considered as not pertinent to the scope of NANO.