材料科学
复合数
导电体
摩擦电效应
涂层
纳米技术
电磁屏蔽
电极
纳米发生器
可穿戴计算机
纳米线
聚偏氟乙烯
复合材料
光电子学
计算机科学
压电
聚合物
化学
物理化学
嵌入式系统
作者
Chenhui Xu,Zhihui Li,Tianyi Hang,Yiming Chen,Tianlong He,Xiping Li,Jiajia Zheng,Zhiyi Wu
标识
DOI:10.1002/advs.202403551
摘要
Abstract With the onset of the 5G era, wearable flexible electronic devices have developed rapidly and gradually entered the daily life of people. However, the vast majority of research focuses on the integration of functions and performance improvement, while ignoring electromagnetic hazards caused by devices. Herein, the 3D double conductive networks are constructed through a repetitive vacuum‐assisted dip‐coating technique to decorate the 2D MXene and 1D silver nanowires on the melamine foam. Benefiting from the unique porous structure and multi‐scale interconnected frame, the resultant composite foam exhibited high electrical conductivity, low density, superb electromagnetic interference shielding (48.32 dB), and Joule heating performance (up to 90.8 °C under 0.8 V). Furthermore, a single‐electrode triboelectric nanogenerator (TENG) with powerful energy harvesting capability is assembled by combining the composite foam with an ultra‐thin Ecoflex film and a polyvinylidene fluoride film. Simultaneously, the foam‐based TENG can also be considered a reliable wearable sensor for monitoring activity patterns in different parts of the human body. The versatility and scalable manufacturing of high‐performance composite foams will provide new design ideas for the development of next‐generation flexible wearable devices.
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