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Ti3C2Tx MXene Nanosheet-Based Hybrid Films for Enhanced Wave Absorption-Dominated Electromagnetic Interference Shielding
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2023-10-17 , DOI: 10.1021/acsanm.3c03932 Guoyu Yang 1, 2 , Xuming Yao 1, 2 , Yujun Li 1, 2 , Yi Hu 1, 2, 3 , Xing Chen 1, 2 , Jialiang Li 1, 2 , Junzhen Chen 1, 2 , Jianjun Jiang 1, 2
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2023-10-17 , DOI: 10.1021/acsanm.3c03932 Guoyu Yang 1, 2 , Xuming Yao 1, 2 , Yujun Li 1, 2 , Yi Hu 1, 2, 3 , Xing Chen 1, 2 , Jialiang Li 1, 2 , Junzhen Chen 1, 2 , Jianjun Jiang 1, 2
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Owing to its excellent electronic properties, Ti3C2Tx MXene is an emerging class of two-dimensional nanomaterials that have a promising electromagnetic (EM) wave function; however, poor impedance matching has limited the application of these materials in absorption-dominated EM interference (EMI) shielding. Hence, the investigation of thin MXene nanosheet-based film materials for application to absorption-dominated EMI shielding, which produces less EM pollution than reflection-dominated EMI shielding materials, is essential. In this study, a Ti3C2Tx/carbonyl iron–aramid hybrid film possessing absorption-dominated EMI shielding properties was prepared by using flower-like core–shell Ti3C2Tx/carbonyl iron microspheres (Ti3C2Tx/CIs) and aramid nanofibers. In the X band, the EMI shielding effectiveness of the films reached 31.9 dB with a lower SER value (below 3 dB), which means that less than 50% of the reflected incident waves and secondary EM pollution were reduced by the EMI shielding film materials. These results were attributed to superior impedance matching and multiple dissipation mechanisms of the Ti3C2Tx/CIs nanocomposites, which substantially enhanced the EM-wave absorption properties of a single MXene. The experimental results indicated that Ti3C2Tx/CIs nanocomposites showed a minimum reflection loss of −50.8 dB at 7.84 GHz. Moreover, a maximum effective absorption bandwidth of 5.5 GHz (12.48–18 GHz) was obtained at 1.60 mm, almost covering the entire Ku band. Therefore, this work provides a framework for designing MXene-based absorption-dominated EMI shielding nanocomposites.
中文翻译：
基于 Ti3C2Tx MXene 纳米片的混合薄膜，用于增强吸波主导的电磁干扰屏蔽
由于其优异的电子性能，Ti 3 C 2 T x MXene 是一类新兴的二维纳米材料，具有良好的电磁（EM）波函数；然而，较差的阻抗匹配限制了这些材料在吸收为主的电磁干扰（EMI）屏蔽中的应用。因此，研究基于 MXene 纳米片的薄薄膜材料应用于吸收主导的 EMI 屏蔽是至关重要的，这种材料比反射主导的 EMI 屏蔽材料产生的电磁污染更少。本研究利用花状核壳Ti 3 C 2 T x /羰基铁微球（Ti 3 C 2 T x /羰基铁）制备了具有吸收主导EMI屏蔽性能的Ti 3 C 2 T x /羰基铁-芳纶杂化薄膜。 T x /CIs）和芳纶纳米纤维。在X波段，薄膜的EMI屏蔽效能达到31.9 dB，且SE R值较低（低于3 dB），这意味着EMI屏蔽薄膜减少了不到50%的反射入射波和二次电磁污染。材料。这些结果归因于Ti 3 C 2 T x /CIs纳米复合材料优异的阻抗匹配和多重耗散机制，这大大增强了单个MXene的电磁波吸收性能。实验结果表明Ti 3 C 2 T x /CIs纳米复合材料在7.84 GHz时表现出最小反射损耗为-50.8 dB。此外，在1.60 mm处获得了5.5 GHz（12.48-18 GHz）的最大有效吸收带宽，几乎覆盖了整个Ku波段。因此，这项工作为设计基于 MXene 的吸收主导的 EMI 屏蔽纳米复合材料提供了一个框架。
更新日期：2023-10-17
中文翻译：
基于 Ti3C2Tx MXene 纳米片的混合薄膜，用于增强吸波主导的电磁干扰屏蔽
由于其优异的电子性能，Ti 3 C 2 T x MXene 是一类新兴的二维纳米材料，具有良好的电磁（EM）波函数；然而，较差的阻抗匹配限制了这些材料在吸收为主的电磁干扰（EMI）屏蔽中的应用。因此，研究基于 MXene 纳米片的薄薄膜材料应用于吸收主导的 EMI 屏蔽是至关重要的，这种材料比反射主导的 EMI 屏蔽材料产生的电磁污染更少。本研究利用花状核壳Ti 3 C 2 T x /羰基铁微球（Ti 3 C 2 T x /羰基铁）制备了具有吸收主导EMI屏蔽性能的Ti 3 C 2 T x /羰基铁-芳纶杂化薄膜。 T x /CIs）和芳纶纳米纤维。在X波段，薄膜的EMI屏蔽效能达到31.9 dB，且SE R值较低（低于3 dB），这意味着EMI屏蔽薄膜减少了不到50%的反射入射波和二次电磁污染。材料。这些结果归因于Ti 3 C 2 T x /CIs纳米复合材料优异的阻抗匹配和多重耗散机制，这大大增强了单个MXene的电磁波吸收性能。实验结果表明Ti 3 C 2 T x /CIs纳米复合材料在7.84 GHz时表现出最小反射损耗为-50.8 dB。此外，在1.60 mm处获得了5.5 GHz（12.48-18 GHz）的最大有效吸收带宽，几乎覆盖了整个Ku波段。因此，这项工作为设计基于 MXene 的吸收主导的 EMI 屏蔽纳米复合材料提供了一个框架。
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