Journal ArticleDOI
Broadband and Tunable High‐Performance Microwave Absorption of an Ultralight and Highly Compressible Graphene Foam
Yi Zhang,Yi Huang,Tengfei Zhang,Huicong Chang,Peishuang Xiao,Honghui Chen,Zhiyu Huang,Yongsheng Chen +7 more
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TLDR
The broadband and tunable high-performance microwave absorption properties of an ultralight and highly compressible graphene foam (GF) are investigated and it is shown that via physical compression, the microwave absorption performance can be tuned.Abstract:
The broadband and tunable high-performance microwave absorption properties of an ultralight and highly compressible graphene foam (GF) are investigated. Simply via physical compression, the microwave absorption performance can be tuned. The qualified bandwidth coverage of 93.8% (60.5 GHz/64.5 GHz) is achieved for the GF under 90% compressive strain (1.0 mm thickness). This mainly because of the 3D conductive network.read more
Citations
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Microstructure Design of Lightweight, Flexible, and High Electromagnetic Shielding Porous Multiwalled Carbon Nanotube/Polymer Composites.
Zhihui Zeng,Zhihui Zeng,Hao Jin,Mingji Chen,Weiwei Li,Weiwei Li,Licheng Zhou,Xiao Xue,Xiao Xue,Zhong Zhang +9 more
TL;DR: Under the mutual promotion of the frame and porous structure, the lightweight high-performance shielding is achieved: a 2.3 mm thick sample can reach 46.7 dB in the microwave X-band while the density is merely 32.3 mg cm-3, far beyond the conductive polymer composites with other fillers ever reported.
Journal ArticleDOI
Binary synergistic enhancement of dielectric and microwave absorption properties: A composite of arm symmetrical PbS dendrites and polyvinylidene fluoride
TL;DR: In this article, the authors demonstrate that metal sulfide microcrystals can be added to polymer matrix composites to improve the dielectric and microwave-absorption properties of ASD-PbS composites.
Journal ArticleDOI
Synergistic effect of graphene and carbon nanotube for high-performance electromagnetic interference shielding films
Erzhen Zhou,Jiabin Xi,Guo Yan,Yingjun Liu,Zhen Xu,Li Peng,Weiwei Gao,Ji Ying,Zichen Chen,Chao Gao +9 more
TL;DR: In this paper, the synergistic effect of graphene and carbon nanotubes (CNTs) on macro-assembled carbon-based films has been investigated and shown to improve electrical conductivity, thermal conductivity and EMI shielding performance.
Journal ArticleDOI
Paramagnetic CoS2@MoS2 core-shell composites coated by reduced graphene oxide as broadband and tunable high-performance microwave absorbers
TL;DR: In this paper, an as-synthesized CoS2@MoS2/rGO composites were designed and synthesized by a facile hydrothermal method.
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Electromagnetic absorption materials: current progress and new frontiers
TL;DR: A comprehensive review of the current status and new frontiers on EM absorption materials is provided in this paper , with an emphasis on the mechanisms and characterizations of EM apsorption materials.
References
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Journal ArticleDOI
Three-dimensional flexible and conductive interconnected graphene networks grown by chemical vapour deposition
TL;DR: The direct synthesis of three-dimensional foam-like graphene macrostructures, which are called graphene foams (GFs), by template-directed chemical vapour deposition is reported, demonstrating the great potential of GF/poly(dimethyl siloxane) composites for flexible, foldable and stretchable conductors.
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Microwave Absorption Enhancement and Complex Permittivity and Permeability of Fe Encapsulated within Carbon Nanotubes
TL;DR: In this paper, the absorption properties of CNT/crystalline Fe nanocomposites have been investigated and it was shown that the absorption property is due to the confinement of crystalline Fe in carbon nanoshells, deriving mainly from magnetic rather than electric effects.
Journal ArticleDOI
Multifunctional, ultra-flyweight, synergistically assembled carbon aerogels.
Haiyan Sun,Zhen Xu,Chao Gao +2 more
TL;DR: All carbon aerogels with ultralow density and temperature-invariant super-elasticity are fabricated by facile assembling of commercial carbon nanotubes and chemically-converted giant graphene sheets, on the basis of the synergistic effect between elastic CNTs ribs and giant graphene cell walls.
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Lightweight and Flexible Graphene Foam Composites for High‐Performance Electromagnetic Interference Shielding
TL;DR: It is believed that high electrical conductivity and connectivity of the conductive fi llers can improve EMI shielding performance.
Journal ArticleDOI
Reduced graphene oxides: light-weight and high-efficiency electromagnetic interference shielding at elevated temperatures.
Bo Wen,Mao-Sheng Cao,Ming-Ming Lu,Wen-Qiang Cao,Honglong Shi,Jia Liu,Xi-Xi Wang,Haibo Jin,Xiao-Yong Fang,Wenzhong Wang,Jie Yuan +10 more
TL;DR: Chemical graphitized r-GOs, as the thinnest and lightest material in the carbon family, exhibit high-efficiency electromagnetic interference shielding at elevated temperature, attributed to the cooperation of dipole polarization and hopping conductivity.