Flexible Graphene/MXene Composite Thin Films for High-Performance Electromagnetic Interference Shielding and Joule Heating

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Nano Materials Pub Date : 2023-09-06 DOI:10.1021/acsanm.3c02925

Hongling Li, Zhi Kai Ng, Roland Yingjie Tay, Shiyong Huang, Siu Hon Tsang and Edwin Hang Tong Teo*,

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Abstract

The development of flexible films with excellent electromagnetic interference (EMI) shielding and enhanced thermal management capabilities is highly desired to meet the ever-growing demands for portable and miniaturized electronics. Herein, graphene/MXene (G/M) composite thin films with unique structure, excellent flexibility, and outstanding EMI shielding capability are fabricated by integrating MXene nanosheets with a three-dimensional porous graphene film via a facile vacuum-assisted filtration method. Notably, the obtained G/M composite thin film with a thickness of 100 μm possesses a high EMI shielding effectiveness of up to 96.3 dB. This remarkable EMI shielding performance is attributed to the synergistic effect between the wrinkled structure of the MXene layer and the interconnected porous network of the graphene film, thereby ensuring excellent electrical conductivity and superior mechanical properties. Additionally, the polymer-modified G/M composite thin film shows an excellent electrothermal conversion capability under a low driving voltage. This work provides a facile strategy for fabricating flexible composite thin films toward practical EMI shielding and thermal management applications in next-generation miniaturized flexible electronics.

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用于高性能电磁干扰屏蔽和焦耳加热的柔性石墨烯/MXene复合薄膜

开发具有优异电磁干扰（EMI）屏蔽和增强热管理能力的柔性薄膜是满足便携式和小型化电子产品日益增长的需求的迫切需要。本文通过简单的真空辅助过滤方法，将MXene纳米片与三维多孔石墨烯膜集成，制备了具有独特结构、优异柔韧性和出色EMI屏蔽能力的石墨烯/MXene（G/M）复合薄膜。值得注意的是，所获得的厚度为100μM的G/M复合薄膜具有高达96.3dB的高EMI屏蔽效果。这种显著的EMI屏蔽性能归因于MXene层的褶皱结构和石墨烯膜的互连多孔网络之间的协同效应，从而确保了优异的导电性和优异的机械性能。此外，聚合物改性的G/M复合薄膜在低驱动电压下显示出优异的电热转换能力。这项工作为制造柔性复合薄膜提供了一种简单的策略，用于下一代小型柔性电子产品中的实际EMI屏蔽和热管理应用。

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

ACS Applied Nano Materials Multiple-

CiteScore

8.30

自引率

3.40%

发文量

1601

期刊介绍： ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.