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Ultralightnand HighlynConductive Silver Nanowire Aerogelsnfor High-Performance Electromagnetic Interference Shielding 用于高性能电磁干扰屏蔽的超轻、高导电银纳米线气凝胶

Figshare Pub Date : 1753-01-01 DOI: 10.1021/acsami.2c16940.s001

Fei Peng (540071), Wenbo Zhu (135359), Yi Fang (287944), Bicheng Fu (14420379), Hongtao Chen (603492), Hongjun Ji (3365693), Xing Ma (540879), Chunjin Hang (6560054), Mingyu Li (482173)

{"title":"Ultralightnand HighlynConductive Silver Nanowire Aerogelsnfor High-Performance Electromagnetic Interference Shielding","authors":"Fei Peng (540071), Wenbo Zhu (135359), Yi Fang (287944), Bicheng Fu (14420379), Hongtao Chen (603492), Hongjun Ji (3365693), Xing Ma (540879), Chunjin Hang (6560054), Mingyu Li (482173)","doi":"10.1021/acsami.2c16940.s001","DOIUrl":"https://doi.org/10.1021/acsami.2c16940.s001","url":null,"abstract":"Metal-based materials possess superiornelectromagneticninterferencen(EMI) shielding performance because of their extraordinary electricalnconductivity. Nevertheless, the high density and structural rigiditynof metals seriously limit their applicability in portable and wearablenelectronic equipment. A common method for reducing the density ofnmetal-based materials is to prepare metal nanowire aerogels by freeze-drying,nbut the weak connection among the nanowires results in poor mechanicalnand electrical properties. Herein, a facile approach is developednfor the one-step synthesis of silver nanowire (AgNW) aerogels withnultralow density, good flexibility, high electrical conductivity,nand a robust structure. The gel is directly formed by in situ assemblynof AgNWs. The end-to-end nanojoining of AgNWs contributes to constructingnan interconnected three-dimensional (3D) network, resulting in improvednmechanical and electrical properties. The AgNW aerogel with an ultralowndensity of 4.87 mg cm–3 demonstrates a high electricalnconductivity of 4584 S m–1. Moreover, the porousnstructure of the AgNW aerogel provides numerous interfaces for multiplenreflections and scattering of EM waves, allowing them to be continuouslynabsorbed and dissipated within the aerogel. Thus, the AgNW aerogelnexhibits a superb EMI shielding effectiveness (SE) of 109.3 dB andna normalized surface specific SE (SSE/t, calculatednas the SE divided by the density and thickness) of 353 183ndB cm2 g–1, significantly above thatnof previously known shielding materials. This work provides a newnroute for preparing high-performance metal nanowire aerogels and theirngreat potential in EMI shielding.","PeriodicalId":523776,"journal":{"name":"Figshare","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1753-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147921764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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