Hollow engineering of sandwich NC@Co/NC@MnO2 composites toward strong wideband electromagnetic wave attenuation

Journal of Material Science and Technology, Год журнала: 2023, Номер 175, С. 194 - 203

Опубликована: Сен. 6, 2023

Язык: Английский

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Multicomponent Nanoparticles Synergistic One-Dimensional Nanofibers as Heterostructure Absorbers for Tunable and Efficient Microwave Absorption

Nano-Micro Letters, Год журнала: 2022, Номер 15(1)

Опубликована: Дек. 15, 2022

Application of novel radio technologies and equipment inevitably leads to electromagnetic pollution. One-dimensional polymer-based composite membrane structures have been shown be an effective strategy obtain high-performance microwave absorbers. Herein, we reported a one-dimensional N-doped carbon nanofibers material which encapsulated the hollow Co3SnC0.7 nanocubes in fiber lumen by electrospinning. Space charge stacking formed between nanoparticles can channeled longitudinal fibrous structures. The dielectric constant fibers is highly related carbonization temperature, great impedance matching achieved synergetic effect network. At 800 °C, necklace-like Co3SnC0.7/CNF with 5% low load achieves excellent RL value - 51.2 dB at 2.3 mm absorption bandwidth 7.44 GHz thickness 2.5 mm. multiple wave (EMW) reflections interfacial polarization internal contribute major attenuating EMW. These strategies for regulating performance expanded other functional materials facilitate development emerging

Язык: Английский

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Multiphase Molybdenum Carbide Doped Carbon Hollow Sphere Engineering: The Superiority of Unique Double‐Shell Structure in Microwave Absorption

Small, Год журнала: 2022, Номер 19(6)

Опубликована: Ноя. 27, 2022

In order to achieve excellent electromagnetic wave (EMW) absorption properties, the microstructure design and component control of absorber are critical. this study, three different structures made Mo2 C/C hollow spheres prepared their microwave behavior is investigated. The double-shell consisting an outer thin shell inner rough thick with multiple EMW loss mechanisms exhibit good properties. further improve MoC1-x /C crystalline phases molybdenum carbide optimize capability materials. Finally, α-phase have best When filling 20 wt.%, minimum reflection at 1.8 mm -50.55 dB effective bandwidth 2 5.36 GHz, which expected be a characteristics "thin, light, wide, strong".

Язык: Английский

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The art of framework construction: hollow-structured materials toward high-efficiency electromagnetic wave absorption

Advanced Composites and Hybrid Materials, Год журнала: 2022, Номер 5(3), С. 1658 - 1698

Опубликована: Июнь 17, 2022

Язык: Английский

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Recent progress of perovskite oxides and their hybrids for electromagnetic wave absorption: a mini-review

Advanced Composites and Hybrid Materials, Год журнала: 2022, Номер 5(3), С. 2440 - 2460

Опубликована: Апрель 25, 2022

Язык: Английский

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An Equivalent Substitute Strategy for Constructing 3D Ordered Porous Carbon Foams and Their Electromagnetic Attenuation Mechanism

Nano-Micro Letters, Год журнала: 2022, Номер 14(1)

Опубликована: Авг. 2, 2022

Three-dimensional (3D) ordered porous carbon is generally believed to be a promising electromagnetic wave (EMW) absorbing material. However, most research works targeted performance improvement of 3D carbon, and the specific attenuation mechanism still ambiguous. Therefore, in this work, novel ultra-light egg-derived foam (EDCF) structure has been successfully constructed by simple carbonization combined with silica microsphere template-etching process. Based on an equivalent substitute strategy, influence pore volume surface area parameters EMW absorption properties EDCF products was confirmed respectively adjusting addition content diameter microspheres. As primary mode, dielectric loss originates from comprehensive effect conduction polarization S-band C band, value dominated X band Ku which obviously greater than that loss. Furthermore, all samples, largest effective bandwidth EDCF-3 7.12 GHz under thickness 2.13 mm filling approximately 5 wt%, covering whole band. Meanwhile, EDCF-7 sample optimized achieves minimum reflection (RLmin) - 58.08 dB at 16.86 while 1.27 mm. The outstanding results not only provide insight into enhancement but also clarify dominant dissipation for carbon-based absorber perspective objective experiments.

Язык: Английский

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Alkali and ion exchange co-modulation strategies to design magnetic–dielectric synergistic nano-absorbers for tailoring microwave absorption

Nano Research, Год журнала: 2023, Номер 16(7), С. 8522 - 8532

Опубликована: Июнь 13, 2023

Язык: Английский

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Metal-organic framework-derived carbon nanotubes for broadband electromagnetic wave absorption

Chemical Engineering Journal, Год журнала: 2022, Номер 450, С. 138205 - 138205

Опубликована: Июль 20, 2022

Язык: Английский

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Efficient microwave absorption achieved through in situ construction of core-shell CoFe2O4@mesoporous carbon hollow spheres

International Journal of Minerals Metallurgy and Materials, Год журнала: 2023, Номер 30(3), С. 504 - 514

Опубликована: Янв. 14, 2023

Язык: Английский

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Hierarchically flower-like structure assembled with porous nanosheet-supported MXene for ultrathin electromagnetic wave absorption

Chemical Engineering Journal, Год журнала: 2022, Номер 454, С. 140277 - 140277

Опубликована: Ноя. 11, 2022

Язык: Английский

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