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
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Symmetrical polyhedron-bowl Co/CoO with hexagonal plate to forward electromagnetic wave absorption ability
Biao Zhao,Biao Zhao,Yang Li,Liu Junwei,Fan Lei,Gao Ka,Zhongyi Bai,Luyang Liang,Xiaoqin Guo,Rui Zhang +9 more
TL;DR: In this paper, the effects of reaction conditions (solvent constituents and reaction times) on the morphologies of Co/CoO polyhedron paraffin composites were investigated in detail.
Journal ArticleDOI
Tuning the inner hollow structure of lightweight amorphous carbon for enhanced microwave absorption
TL;DR: In this paper, the authors demonstrate that amorphous carbon can be converted to lightweight superior MA materials only via a facile inside three dimensional ordered hollow (3DOH) architecture fabrication.
Journal ArticleDOI
Peaked dielectric responses in Ti3C2 MXene nanosheets enabled composites with efficient microwave absorption
TL;DR: In this article, the microwave dielectric behavior of sandwich-like Ti3C2 MXene nanosheets with efficient microwave absorption was investigated by a combination of experiments and simulations.
Journal ArticleDOI
Phenolic resin reinforcement: A new strategy for hollow NiCo@C microboxes against electromagnetic pollution
TL;DR: In this paper, NiCo Prussian blue analog (PBA) microcubes were used as the precursor for the synthesis of functional carbon-based materials in different fields, and they successfully harvested hollow NiCo@C microboxes through alkaline etching and phenolic resin (PR) reinforcement.
Journal ArticleDOI
Fe3O4 Nanoparticle/N-Doped Carbon Hierarchically Hollow Microspheres for Broadband and High-Performance Microwave Absorption at an Ultralow Filler Loading.
TL;DR: Benefiting from their unique structure and diversed composition which synergetically contribute to good impedance matching, strong dielectric/magnetic loss and abundant multi-scattering/reflection, the Fe3O4/CM composite possessed a RLmin value reaching -60.3 dB, significantly superior to that of the previously reported state-of-the-art Fe3 O4-based or/and hollow MAMs.
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.
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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.
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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.