Nitrogen-Doped Magnetic-Dielectric-Carbon Aerogel for High-Efficiency Electromagnetic Wave Absorption

Nano-Micro Letters, Год журнала: 2023, Номер 16(1)

Опубликована: Ноя. 17, 2023

Abstract Carbon-based aerogels derived from biomass chitosan are encountering a flourishing moment in electromagnetic protection on account of lightweight, controllable fabrication and versatility. Nevertheless, developing facile construction method component design with carbon-based for high-efficiency wave absorption (EWA) materials broad effective bandwidth (EAB) strong yet hits some snags. Herein, the nitrogen-doped magnetic-dielectric-carbon aerogel was obtained via ice template followed by carbonization treatment, homogeneous abundant nickel (Ni) manganese oxide (MnO) particles situ grew carbon aerogels. Thanks to optimization impedance matching dielectric/magnetic components aerogels, (Ni/MnO-CA) suggests praiseworthy EWA performance, an ultra-wide EAB 7.36 GHz minimum reflection loss (RL min ) − 64.09 dB, while achieving specific 253.32 dB mm −1 . Furthermore, reveals excellent radar stealth, infrared thermal management capabilities. Hence, high-performance, easy fabricated multifunctional nickel/manganese oxide/carbon have application aspects protection, electronic devices aerospace.

Язык: Английский

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Synthesis of polymer-derived N,O-doped bowl-like hollow carbon microspheres for improved electromagnetic wave absorption using controlled template pyrolysis

Chemical Engineering Journal, Год журнала: 2023, Номер 463, С. 142398 - 142398

Опубликована: Март 13, 2023

Язык: Английский

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Three-dimensional macroscopic absorbents: From synergistic effects to advanced multifunctionalities

Nano Research, Год журнала: 2023, Номер 17(3), С. 1952 - 1983

Опубликована: Окт. 14, 2023

Язык: Английский

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Facile fabrication of biomass chitosan-derived magnetic carbon aerogels as multifunctional and high-efficiency electromagnetic wave absorption materials

Carbon, Год журнала: 2023, Номер 216, С. 118528 - 118528

Опубликована: Окт. 15, 2023

Язык: Английский

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Electromagnetic oscillation induced graphene-based aerogel microspheres with dual-chamber achieving high-performance broadband microwave absorption

Composites Part B Engineering, Год журнала: 2023, Номер 271, С. 111149 - 111149

Опубликована: Дек. 16, 2023

Язык: Английский

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N, O‐Doped Walnut‐Like Porous Carbon Composite Microspheres Loaded with Fe/Co Nanoparticles for Adjustable Electromagnetic Wave Absorption

Small, Год журнала: 2024, Номер 20(20)

Опубликована: Янв. 11, 2024

Abstract This study addresses the challenge of designing simple and environmentally friendly methods for preparation effective electromagnetic wave (EMW) absorbing materials with tailored microstructures multi‐component regulation. N, O doped walnut‐like porous carbon composite microspheres loaded FeCo nanoparticles (WPCM/Fe–Co) are synthesized through high‐temperature carbonization combined soap‐free emulsion polymerization hydrothermal methods, avoiding use toxic solvents complex conditions. The incorporation magnetic components enhances loss, complementing dielectric loss to optimize EMW attenuation. unique morphology further improves impedance matching. proportions Fe Co can be adjusted regulate material's reflection thickness, bandwidth, allowing fine‐tuning absorption performance. At a low filling ratio (16.7%), optimal WPCM/Fe–Co composites exhibit minimum ( RL min ) −48.34 dB (10.33 GHz, 3.0 mm) an overall bandwidth (EAB) covering entire C bands, X Ku bands. work introduces novel approach composition regulation presents green synthesis method absorbers high‐performance at loading.

Язык: Английский

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Miniaturized Hard Carbon Nanofiber Aerogels: From Multiscale Electromagnetic Response Manipulation to Integrated Multifunctional Absorbers

Advanced Functional Materials, Год журнала: 2024, Номер 34(48)

Опубликована: Июль 17, 2024

Abstract The multiscale structural engineering strategy presents a powerful method for tailoring the attributes of materials at various levels, enabling flexible control and manipulation their electromagnetic properties. Nonetheless, orchestrating architecture polymer‐derived carbon aerogels specifically microwave absorption poses significant challenges. Herein, aramid‐derived hard nanofiber aerogel microspheres (CNFAMs) featuring hierarchical skin‐core structure are fabricated through wet‐spinning technique, combined with reprotonation‐mediated self‐assembly carbonization processes. presence large‐scale voids between neighboring microscale porosity within themselves improves impedance matching promotes reflection scattering. distinct graphitic domains defects serve as pivotal elements conduction polarization losses, significantly impacting attenuation. By meticulously macroscale dimensions, porous architecture, nanoscale domains, optimized CNFAMs demonstrate remarkable bandwidth 9.62 GHz an ultralow filling 0.97 wt%. Additionally, implementation application‐oriented innovative integration polysilsesquioxane‐CNFAMs in host–guest is explored. This composite system brings together broadband absorption, superhydrophobicity, thermal insulation, resistance to freezing, robust tolerance harsh environments. Such multifaceted approach designed tackle growing challenges associated complex environments effectively.

Язык: Английский

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Perspectives for electromagnetic wave absorption with graphene

Carbon, Год журнала: 2024, Номер 223, С. 119017 - 119017

Опубликована: Март 4, 2024

Язык: Английский

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Rail-like heterostructured porous carbon composites derived from vanadium metal-organic framework/butterfly wings for enhanced microwave absorption

Carbon, Год журнала: 2024, Номер 221, С. 118930 - 118930

Опубликована: Фев. 13, 2024

Язык: Английский

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Rational design of hollow bimetallic sulfide@carbon with abundant heterogeneous interfaces and conductive network synergies for efficient microwave absorption

Carbon, Год журнала: 2024, Номер 224, С. 119099 - 119099

Опубликована: Апрель 1, 2024

Язык: Английский

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