Flexible and ultrathin Fe3O4/Wood/Cu composite films for efficient electromagnetic interference shielding

IF 3.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Today Communications Pub Date : 2024-09-06 DOI:10.1016/j.mtcomm.2024.110351

Mayin Dai, Xin Zheng, Qiang Guo, Shuaiqi Hu, Fengqi Qiu, Yanfei Pan

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引用次数: 0

Abstract

The issues of electromagnetic wave pollution and electromagnetic interference (EMI) are becoming worse due to the quick growth of wireless communication and the enormous desire for portable, intelligent devices. The development of materials with strong electromagnetic shielding capability and ultra-thin flexibility is urgently needed. The goal of this study was to develop and create a flexible, ultra-thin FeO/Wood/Cu composite film with high EMI shielding performance using in-situ impregnation of FeO and electroless Cu method, followed by densification. The FeO/Wood/Cu-40 composite film exhibits good EMI shielding performance of 56.62 dB and strong conductivity of 188.7 S cm at just 150 μm in thickness. Notably, the FeO/Wood/Cu-40 composite film's specific electromagnetic shielding effectiveness (SSE/t) in the X-band is 4919.60 dB cm g, which is higher than the majority of the hardwood electromagnetic shielding materials that have been reported to date. Because FeO and metal copper provide wood its electromagnetic double loss properties, the FeO/Wood/Cu-40 composite film has a high absorption coefficient (A=0.54), suggesting effective electromagnetic wave absorption. Furthermore, the FeO/Wood/Cu composite sheet has outstanding mechanical qualities and a smooth surface. The developed flexible ultrathin FeO/Wood/Cu composite material may be used for wearing smart devices and has a wide range of potential applications in the area of electromagnetic shielding.

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用于高效电磁干扰屏蔽的柔性超薄 Fe3O4/Wood/Cu 复合薄膜

由于无线通信的快速发展和人们对便携式智能设备的巨大需求，电磁波污染和电磁干扰（EMI）问题日益严重。开发具有强大电磁屏蔽能力和超薄柔性的材料迫在眉睫。本研究的目标是利用原位浸渍氧化铁和无电解铜方法，开发并制造出具有高电磁干扰屏蔽性能的柔性超薄氧化铁/木材/铜复合薄膜，然后进行致密化处理。厚度仅为 150 μm 的 FeO/Wood/Cu-40 复合薄膜具有 56.62 dB 的良好 EMI 屏蔽性能和 188.7 S cm 的强导电性。值得注意的是，FeO/Wood/Cu-40 复合薄膜在 X 波段的比电磁屏蔽效能（SSE/t）为 4919.60 dB cm g，高于目前已报道的大多数硬木电磁屏蔽材料。由于氧化铁和金属铜为木材提供了电磁双损耗特性，FeO/Wood/Cu-40 复合薄膜具有较高的吸收系数（A=0.54），表明它能有效吸收电磁波。此外，FeO/Wood/Cu 复合薄膜还具有出色的机械性能和光滑的表面。所开发的柔性超薄 FeO/Wood/Cu 复合材料可用于佩戴智能设备，在电磁屏蔽领域具有广泛的潜在应用。

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

Materials Today Communications Materials Science-General Materials Science

CiteScore

5.20

自引率

5.30%

发文量

1783

审稿时长

51 days

期刊介绍： Materials Today Communications is a primary research journal covering all areas of materials science. The journal offers the materials community an innovative, efficient and flexible route for the publication of original research which has not found the right home on first submission.