Interest has been growing in electromagnetic interference (EMI) shielding materials in view of soaring EM radiation and its pollution control, which is necessary for public health and normal communication. To realize high EMI shielding effectiveness (SE), two factors of high electrical conductivity and strong multiple reflections are quite important. However, it is still a big challenge to obtain these two characteristics simultaneously in one material system. Here, we present a lightweight composite film integrating silver nanowires (AgNWs) as the skeleton and MXene as the covering decoration (AgNWs/Ti 3 C 2 T x ) for foaming structure. The composite film exhibits a low density of about 1 g cm −3 and an electrical conductivity of up to 15 038 S cm −1 , which give a superiorly high specific EMI SE per unit thickness of 270 997 dB · cm 2 g −1 , and an EMI SE of 41.3 dB at a thickness of 1.2 μ m (or 96.7 dB at ...

中文翻译：

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超薄MXene板与高导电性银纳米线的2D发泡，由于在自由空间内多次反射，可用于可穿戴的电磁干扰屏蔽应用

鉴于电磁辐射（EM）飙升及其污染控制的兴起，人们对电磁干扰（EMI）屏蔽材料的兴趣日益浓厚，这对于公共卫生和正常通信是必不可少的。为了实现高EMI屏蔽效果（SE），高电导率和强多次反射的两个因素非常重要。然而，在一个材料系统中同时获得这两个特性仍然是一个很大的挑战。在这里，我们提出了一种轻巧的复合膜，该复合膜以银纳米线（AgNWs）为骨架，以MXene作为覆盖装饰（AgNWs / Ti 3 C 2 T x），用于发泡结构。该复合膜表现出约1 g cm -3的低密度和高达15038 S cm -1的电导率，这在270 997 dB·cm 2 g -1的单位厚度下具有极高的比EMI SE，