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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Journal ArticleDOI
Electromagnetic interference shielding with 2D transition metal carbides (MXenes)
Faisal Shahzad,Mohamed Alhabeb,Christine B. Hatter,Babak Anasori,Soon Man Hong,Chong Min Koo,Yury Gogotsi +6 more
TL;DR: The mechanical flexibility and easy coating capability offered by MXenes and their composites enable them to shield surfaces of any shape while providing high EMI shielding efficiency.
Journal ArticleDOI
Hydrophobic, Flexible, and Lightweight MXene Foams for High-Performance Electromagnetic-Interference Shielding
TL;DR: For the first time, an efficient and facile approach is reported to fabricate freestanding, flexible, and hydrophobic MXene foam with reasonable strength by assembling MXene sheets into films followed by a hydrazine-induced foaming process.
Journal ArticleDOI
Thermally Driven Transport and Relaxation Switching Self-Powered Electromagnetic Energy Conversion.
TL;DR: Graphene networks with "well-sequencing genes" can serve as nanogenerators, thermally promoting electromagnetic wave absorption by 250%, with broadened bandwidth covering the whole investigated frequency, opening up an unexpected horizon for converting, storing, and reusing waste electromagnetic energy.
Journal ArticleDOI
Ti3C2 MXenes with Modified Surface for High-Performance Electromagnetic Absorption and Shielding in the X-Band
Meikang Han,Xiaowei Yin,Heng Wu,Zexin Hou,Changqing Song,Xinliang Li,Litong Zhang,Laifei Cheng +7 more
TL;DR: Considering the promising performance of Ti3C2 MXenes with the modified surface, this work is expected to open the door for the expanded applications of MXenes family in EM absorbing and shielding fields.
Journal ArticleDOI
A Voltage-Boosting Strategy Enabling a Low-Frequency, Flexible Electromagnetic Wave Absorption Device.
Hualiang Lv,Hualiang Lv,Zhihong Yang,Paul Luyuan Wang,Guangbin Ji,Jizhong Song,Lirong Zheng,Haibo Zeng,Zhichuan J. Xu +8 more
TL;DR: The method of utilizing an external voltage to break the intrinsic dielectric feature by modifying a traditional electronic absorption device is demonstrated for the first time and has great significance in solving the low-frequency electromagnetic interference issue.
References
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Journal ArticleDOI
Controllable synthesis of porous Fe3O4@ZnO sphere decorated graphene for extraordinary electromagnetic wave absorption
TL;DR: The as-prepared GN-pFe3O4@ZnO composites are shown to be lightweight, have strong absorption, and broad frequency bandwidth EM absorbers.
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Graphene in macroscopic order: liquid crystals and wet-spun fibers.
TL;DR: Graphene chemistry methods that take advantage of liquid crystals to produce graphene fibers are highlighted, which have opened a brand-new avenue for transforming mineral graphite into high performance, multifunctional GFs and offered an alternative strategy for the fabrication of carbon fibers.
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Microporous Co@CoO nanoparticles with superior microwave absorption properties
TL;DR: This novel microporous Co NPs of 31 nm have been successfully prepared by dealloying Co-Al NPs, and surprisingly they possess micropores in a range from 0.7 to 1.7 nm, and exhibit better microwave absorption properties than their nonporous counterpart.
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Electromagnetic shielding performance of carbon foams
TL;DR: In this paper, the electromagnetic shielding performance of carbon foams is measured using the nested reverberation chamber method in the frequency band 1-4 GHz, which is the frequency range of most cellular phones and microwave ovens.
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Three-dimensional SiO2@Fe3O4 core/shell nanorod array/graphene architecture: synthesis and electromagnetic absorption properties.
Yulan Ren,Chunling Zhu,Shen Zhang,Chunyan Li,Yujin Chen,Peng Gao,Piaoping Yang,Qiuyun Ouyang +7 more
TL;DR: The growth mechanism of the 3D architecture was proposed, and thus, the strategy presented here could be used as a typical method to synthesize other 3D magnetic graphene nanostructures for extending their application areas.