Printable Aligned Single-Walled Carbon Nanotube Film with Outstanding Thermal Conductivity and Electromagnetic Interference Shielding Performance  

作　　者：Zhihui Zeng Gang Wang Brendan F.Wolan Na Wu Changxian Wang Shanyu Zhao Shengying Yue Bin Li Weidong He Jiurong Liu Joseph W.Lyding 

机构地区：[1]Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials,Ministry of Education,School of Materials Science and Engineering,Shandong University,Shandong,Jinan 250061,People’s Republic of China [2]Department of Electrical and Computer Engineering,Beckman Institute for Advanced Science and Technology,University of Illinois at Urbana-Champaign,Urbana,IL 61801,USA [3]Department of Chemistry,Swiss Federal Institute of Technology in Zurich(ETH Zürich),8092 Zurich,Switzerland [4]School of Materials Science and Engineering,Nanyang Technological University,50 Nanyang Avenue,Singapore 639798,Singapore [5]Empa,Swiss Federal Laboratories for Materials Science and Technology,Überland Strasse 129,8600 Dübendorf,Switzerland [6]Institute for Advanced Technology,Shandong University,Jinan 250061,People’s Republic of China

出　　处：《Nano-Micro Letters》2022年第11期143-156,共14页纳微快报（英文版）

基　　金：support of National Key R&D Program of China (2021YFB3502500);Provincial Key Research and Development Program of Shandong (2019JZZY010312, 2021ZLGX01);Natural Science Foundation of Shandong Province (2022HYYQ-014);New 20 Funded Programs for Universities of Jinan (2021GXRC036);Qilu Young Scholar Program of Shandong University (31370082163127);the assistance of Shandong University Testing and Manufacturing Center for Advanced Materials;support from the National Science Foundation Engineering Research Center for Power Optimization of Electro Thermal Systems (POETS) under Grant No. EEC 1449548.

摘　　要：Ultrathin,lightweight,and flexible aligned single-walled carbon nanotube(SWCNT)films are fabricated by a facile,environmentally friendly,and scalable printing methodology.The aligned pattern and outstanding intrinsic properties render“metal-like”thermal conductivity of the SWCNT films,as well as excellent mechanical strength,flexibility,and hydrophobicity.Further,the aligned cellular microstructure promotes the electromagnetic interference(EMI)shielding ability of the SWCNTs,leading to excellent shielding effectiveness(SE)of~39 to 90 dB despite a density of only~0.6 g cm^(−3) at thicknesses of merely 1.5-24μm,respectively.An ultrahigh thickness-specific SE of 25693 dB mm^(−1) and an unprecedented normalized specific SE of 428222 dB cm^(2)g^(−1) are accomplished by the freestanding SWCNT films,significantly surpassing previously reported shielding materials.In addition to an EMI SE greater than 54 dB in an ultra-broadband frequency range of around 400 GHz,the films demonstrate excellent EMI shielding stability and reliability when subjected to mechanical deformation,chemical(acid/alkali/organic solvent)corrosion,and high-/low-temperature environments.The novel printed SWCNT films offer significant potential for practical applications in the aerospace,defense,precision components,and smart wearable electronics industries.

关 键 词：Aligned film Single-walled carbon nanotube LIGHTWEIGHT FLEXIBLE Thermal conductivity Electromagnetic interference shielding 

分 类 号：TB383.2[一般工业技术—材料科学与工程]