Flexible Graphene/MXene Composite Thin Films for High-Performance Electromagnetic Interference Shielding and Joule Heating,ACS Applied Nano Materials

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Flexible Graphene/MXene Composite Thin Films for High-Performance Electromagnetic Interference Shielding and Joule Heating
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2023-09-06 , DOI: 10.1021/acsanm.3c02925
Hongling Li ₁ , Zhi Kai Ng ₁ , Roland Yingjie Tay ₁ , Shiyong Huang ₁ , Siu Hon Tsang ₁ , Edwin Hang Tong Teo _{1,

2}

Affiliation

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.

中文翻译：

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

为了满足便携式和小型电子产品不断增长的需求，迫切需要开发具有出色电磁干扰 (EMI) 屏蔽和增强热管理能力的柔性薄膜。在此，通过将MXene纳米片与三维多孔石墨烯薄膜集成，制备了具有独特结构、优异的柔韧性和出色的EMI屏蔽能力的石墨烯/MXene（G/M）复合薄膜。一种简便的真空辅助过滤方法。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EMI屏蔽效能。这种卓越的EMI屏蔽性能归因于MXene层的皱纹结构和石墨烯薄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表现出优异的电热转换能力。这项工作提供了一种简便的策略，用于制造柔性复合薄膜，以实现下一代小型化柔性电子产品中的实际 EMI 屏蔽和热管理应用。

更新日期：2023-09-06

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