Fabrication of nitrogen-doped reduced graphene oxide/tricobalt tetraoxide composite aerogels with high efficiency, broadband microwave absorption, and good compression recovery performance

Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: 190, P. 106 - 116

Published: Jan. 23, 2024

Language: Английский

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Enhanced electromagnetic wave absorption of bacterial cellulose/ reduced graphene oxide aerogel by eco-friendly in-situ construction

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 678, P. 648 - 655

Published: Aug. 26, 2024

Language: Английский

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Electrostatically fabricated heterostructure of interfacial-polarization-enhanced Fe3O4/C/MXene for ultra-wideband electromagnetic wave absorption

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 662, P. 796 - 806

Published: Feb. 18, 2024

Language: Английский

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Combustion-Assisted construction of Defect-Enriched hierarchical carbon composites towards efficient Low-Frequency electromagnetic wave absorption

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150893 - 150893

Published: April 3, 2024

Language: Английский

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Multifunctional Carbon Foam with Nanoscale Chiral Magnetic Heterostructures for Broadband Microwave Absorption in Low Frequency

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: Feb. 6, 2025

Abstract The construction of carbon nanocoil (CNC)-based chiral-dielectric-magnetic trinity composites is considered as a promising approach to achieve excellent low-frequency microwave absorption. However, it still challenging further enhance the low frequency absorption and elucidate related loss mechanisms. Herein, chiral CNCs are first synthesized on three-dimensional (3D) foam then combined with FeNi/NiFe 2 O 4 nanoparticles form novel foam. 3D porous CNC-carbon network provides impedance matching strong conduction loss. formation FeNi-carbon interfaces induces interfacial polarization loss, which confirmed by density functional theory calculations. Further permeability analysis micromagnetic simulation indicate that nanoscale magnetic heterostructures pinning coupling effects, anisotropy capability. Owing synergistic effect between dielectricity, chirality, magnetism, composite exhibits performance an ultrabroad effective bandwidth (EAB) 14 GHz minimum reflection less than − 50 dB. More importantly, C-band EAB extended GHz, achieving full coverage. This study guidelines for microstructure design broadband

Language: Английский

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Scalable fabrication of lightweight carbon nanotube aerogel composites for full X-band electromagnetic wave absorption

Carbon, Journal Year: 2024, Volume and Issue: 219, P. 118811 - 118811

Published: Jan. 10, 2024

Language: Английский

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Two-phase magnetic nanospheres with magnetic coupling effect encapsulated in porous carbon to achieve lightweight and efficient microwave absorbers

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 671, P. 56 - 66

Published: May 22, 2024

Language: Английский

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Fabrication of Micro‐Mesopores on Spiral Carbon Nanocoils and Simultaneous Doping with Oxygen to Expand Microwave Absorption Bandwidth

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 6, 2024

Abstract The exceptional benefits of structural defects and doped atoms in carbon network regarding electromagnetic properties inspire the design advanced carbon‐based microwave absorption (MA) materials. However, excessive decline physical materials, especially their conductivity. Therefore, it is a great challenge to balance optimize conductive behavior for MA spiral nanocoil (CNC), with coexisting amorphous polycrystalline structures moderate conductivity, has significant but lacks pores atoms. Herein, parts relatively weak C─C bond energies are preferentially oxidized at 500 °C air atmosphere create combine O bodies CNCs. Furthermore, mechanism prioritizing formation doping over discovered. Benefiting from synergistic interplay dopants, O‐enriched porous CNCs demonstrate enhanced conduction polarization losses than pure CNCs, realizing wide effective bandwidth 7.3 GHz filling ratio only 3 wt.%. Theoretical calculations further support these experimental results. combination may serve as an pathway unlocking tunable dielectric

Language: Английский

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Emerging helical carbon nanocoils: A new platform for advanced multifunctional applications

Carbon, Journal Year: 2024, Volume and Issue: 230, P. 119554 - 119554

Published: Aug. 24, 2024

Language: Английский

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Achieving efficient electromagnetic absorption in multifunctional carbon nanotube aerogels by manipulating radialized network structure

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 155629 - 155629

Published: Sept. 12, 2024

Language: Английский

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