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

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 16(1)

Published: Nov. 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.

Language: Английский

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Polydopamine-derived nitrogen-doped carbon coupled with MoSe2 nanosheets composites toward high-efficiency electromagnetic wave absorption

Carbon, Journal Year: 2024, Volume and Issue: 225, P. 119119 - 119119

Published: April 8, 2024

Language: Английский

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Construction of CoO/Co9S8/NC composites with low-frequency and broadband electromagnetic wave absorption

Carbon, Journal Year: 2024, Volume and Issue: 228, P. 119338 - 119338

Published: June 13, 2024

Language: Английский

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Metal–Organic Framework-Derived Hierarchical Cu9S5/C Nanocomposite Fibers for Enhanced Electromagnetic Wave Absorption

Advanced Fiber Materials, Journal Year: 2024, Volume and Issue: 6(2), P. 430 - 443

Published: Jan. 30, 2024

Language: Английский

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Cation Bimetallic MOF Anchored Carbon Fiber for Highly Efficient Microwave Absorption

Small, Journal Year: 2024, Volume and Issue: 20(32)

Published: March 19, 2024

Abstract Carbon fiber (CF) is a potential microwave absorption (MA) material due to the strong dielectric loss. Nevertheless, owing high conductivity, poor impedance matching of carbon‐based materials results in limited MA performance. How solve this problem and achieve excellent performance remains principal challenge. Herein, taking full advantage CF bimetallic metal–organic frameworks (MOF) derivatives layer, an absorber based on micron‐scale 1D NiCoMOF (CF@NiCoMOF‐800) developed. After adjusting oxygen vacancies MOF, resultant presented properties including minimum reflection loss (RL min ) −80.63 dB wide effective bandwidth (EAB) 8.01 GHz when its mass percent only 5 wt.% thickness 2.59 mm. Simultaneously, mechanical epoxy resin (EP)‐based coating with are effectively improved. The hardness (H), elastic modulus (E), bending strength, compressive strength CF@NiCoMOF‐800/EP 334 MPa, 5.56 GPa, 82.2 135.8 which 38%, 15%, 106% 53% higher than EP coating. This work provides promising solution for carbon achieving properties.

Language: Английский

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Multifunctional graphene/Ti3C2T MXene aerogel inlaid with Ni@TiO2 core-shell microspheres for high-efficiency electromagnetic wave absorption and thermal insulation

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150918 - 150918

Published: April 1, 2024

Language: Английский

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Construction of flower-like MoS2 decorated on Cu doped CoZn-ZIF derived N-doped carbon as superior microwave absorber

Nano Research, Journal Year: 2024, Volume and Issue: 17(9), P. 8250 - 8260

Published: July 23, 2024

Language: Английский

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Zeolite imidazolate framework derived efficient absorbers: from morphology modulation to component regulation

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1010, P. 177092 - 177092

Published: Oct. 16, 2024

Language: Английский

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A simple co-doping strategy to synthesis of Ni@B/N carbon nanotubes with broadband and low-frequency electromagnetic wave absorption

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 483, P. 149151 - 149151

Published: Jan. 28, 2024

Language: Английский

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Bioinspired Disordered Aerogel for Omnidirectional Terahertz Response

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 31, 2025

The structural disorder of the black butterfly assists in capturing sunlight across a wider spectral and angular range, injecting infinite vitality for omnidirectional stimuli-responsive wave-absorbing materials. Here, disordered micro-pores responding to terahertz (THz) waves through electromagnetic simulations, then prepared via ice templating technology are analyzed optimized. customized aerogel makes possible perfect response property with incidence-angle-insensitive ultra-broadband. Ti3C2Tx MXene/carboxymethyl cellulose aerogels realize excellent shielding effectiveness exceeding 70.32 dB reflection loss more than 43.02 over frequency range 0.3-1.5 THz. Tailoring orientation anisotropic functions as versatile dynamic modulation approach along propagation direction. porous structure moderate conductivity gradually triggers resonance effect cavity, approximating sphere (pore) waveguide system (tube). Ultimately, gradient impedance is proposed integrating THz-infrared stealth, hydrophobicity, mechanical strength. This inspired biomimetic strategy will also enable various applications such imaging, line-of-sight telecommunication, information encryption, space exploration.

Language: Английский

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