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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Improved microwave absorption performance of a multi-dimensional Fe2O3/CNTCM@CN assembly achieved by enhanced dielectric relaxation
Xuefeng Yu,Ying Zhang,Lei Wang,Linshen Xing,Wenbin You,Liu Jiwei,Guanyu Chen,Guangzhou Ding,Jingjun Ding,Xianhu Liu,Min Wang,Renchao Che +11 more
TL;DR: In this article, a novel class of Fe2O3/CNTCM@CN-2 hybrid was successfully fabricated by a facile spray-drying process, followed by an annealing treatment.
Journal ArticleDOI
Microwave absorption property of coffee waste bio-carbon modified by industrial waste MnFe2O4 particles
Ali Hassan,Ali Hassan,Wei Ding,Muhammad Adnan Aslam,Muhammad Adnan Aslam,Yuecheng Bian,Yuecheng Bian,Qiangchun Liu,Zhigao Sheng +8 more
TL;DR: In this article, an efficient microwave absorber has been realized based on their composites, by utilizing coffee waste bio-carbon and industrial waste MnFe2O4 particles, the microwave absorption performance as well as the magnetization of as-synthesized composites can be tuned by adjusting the particle size of MnFe 2O4.
Journal ArticleDOI
Niobium-doped TiO2 solid acid catalysts: Strengthened interfacial polarization, amplified microwave heating and enhanced energy efficiency of hydroxymethylfurfural production
TL;DR: In this article, Niobium (Nb) doping has been used to enhance acid sites and increase acid strength in microwave assisted catalytic conversion of fructose to hydroxymethylfurfural (HMF).
Journal ArticleDOI
Theoretical Study of Electromagnetic Interference Shielding of 2D MXenes Films
TL;DR: In this paper, the electromagnetic interference shielding effectiveness of a series of 2D transition metal carbides, carbonitrides, and nitrides (collectively known as MXenes) is investigated.
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In situ dynamics response mechanism of the tunable length-diameter ratio nanochains for excellent microwave absorber
TL;DR: In this article, the precise synthesis of Co nanochain with the tunable length-diameter ratio is realized via a magnetic-field-guided assembly approach, which exhibits enhanced microwave absorption performance (near to -60 dB, layer thickness 2.2 mm).
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.