Flexible electromagnetic wave absorbing composite based on 3D rGO-CNT-Fe3O4 ternary films
Flexible electromagnetic wave absorbing composite based on 3D rGO-CNT-Fe3O4 ternary films
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DOI：
10.1016/j.carbon.2017.11.094
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发表时间：
2018-04-01
期刊：
影响因子：
10.9
通讯作者：
Chou, Tsu-Wei
中科院分区：
文献类型：
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作者：
Li, Jinsong;Xie, Yunzhu;Chou, Tsu-Wei
采用电泳法在碳纳米管（CNT）-Fe 3 O 4薄膜上组装了几何形状可控的三维还原氧化石墨烯（rGO）网络层。所制造的微结构由石墨烯和碳纳米管的互连网络组成，磁性Fe 3 O 4颗粒作为电荷载流子的快速传输通道，具有高电导率。基于这种独特的网络结构，我们展示了其作为电磁波吸收材料的应用潜力。碳纳米管薄膜-Fe 3 O 4-rGO-聚二甲基硅氧烷（PDMS）4层复合材料的最小反射损耗为-50.5dB，-10dB吸收带宽为5.7GHz，该材料的厚度仅为1.42 mm。弯曲和扭转变形的长期循环测试显示，2000次循环后电磁波吸收保持率>93%。这些结果表明，这种CNT膜-Fe 3 O 4-rGO复合材料是非常有前途的下一代便携式电子产品和可穿戴设备。(c)2017爱思唯尔有限公司版权所有
Geometry-controllable three-dimensional reduced graphene oxide (rGO) network layers on carbon nanotube (CNT)-Fe3O4 films are assembled by electrophoresis. The fabricated microstructure consists of an interconnected network of graphene and carbon nanotubes with magnetic Fe3O4 particles as the fast transport channel of charge carriers for high electrical conductivity. Building upon this unique network structure, we demonstrate the superb potential for its application as electromagnetic wave absorbing material. The minimum reflection loss of the CNT film-Fe3O4-rGO-polydimethylsiloxane (PDMS) composite with 4 layers is -50.5 dB and absorption bandwidth at -10 dB is 5.7 GHz, respectively, the thickness of this material is only 1.42 mm. Long-term cycling tests in bending and twisting deformations show >93% retention of EM wave absorption after 2000 cycles. These results suggest that such CNT film-Fe3O4-rGO composite is very promising for next generation portable electronics and wearable devices. (c) 2017 Elsevier Ltd. All rights reserved.