Optimal particle distribution induced interfacial polarization in hollow double-shell composites for electromagnetic waves absorption performance

Journal of Colloid and Interface Science, Год журнала: 2022, Номер 634, С. 268 - 278

Опубликована: Дек. 13, 2022

Язык: Английский

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Self‐Assembled MoS₂ Cladding for Corrosion Resistant and Frequency‐Modulated Electromagnetic Wave Absorption Materials from X‐Band to Ku‐Band

Small, Год журнала: 2023, Номер 19(52)

Опубликована: Авг. 27, 2023

Reasonable composition design and controllable structure are effective strategies for harmonic electromagnetic wave (EMW) adsorption of multi-component composites. On this basis, the hybrid MoS2 /CoS2 /VN multilayer with triple heterogeneous interface is prepared by simple stirring hydrothermal, which can satisfy synergistic interaction between different components obtain excellent EMW absorption performance. Due to presence multiple interfaces, composites will produce strong interfacial polarization, while defects in sample become center resulting dipole polarization. structural composite material, material not only has good conductive loss polarization loss, but also maintain stability simulated seawater, enhance corrosion resistance. The dual functions resistant microwave achieves a minimum reflection (RL) -50.48 dB an bandwidth up 5.76 GHz, covering both X-band Ku-band. Finally, study provides reference development materials based on transition metal nitrides.

Язык: Английский

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Multiphase Interfacial Regulation Based on Hierarchical Porous Molybdenum Selenide to Build Anticorrosive and Multiband Tailorable Absorbers

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

Опубликована: Ноя. 6, 2023

Electromagnetic wave (EMW) absorbing materials have an irreplaceable position in the field of military stealth as well electromagnetic pollution control. And order to cope with complex environment, design multifunctional and multiband high efficiency EMW absorbers remains a tremendous challenge. In this work, we designed three-dimensional porous structure via salt melt synthesis strategy optimize impedance matching absorber. Also, through interfacial engineering, molybdenum carbide transition layer was introduced between selenide nanoparticles carbon matrix improve absorption behavior The analysis indicates that number components heterogeneous interfaces significant impact on performance absorber due mechanisms such polarization conduction loss by engineering. Wherein, prepared MoSe

Язык: Английский

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Anion Exchange of Metal Particles on Carbon‐Based Skeletons for Promoting Dielectric Equilibrium and High‐Efficiency Electromagnetic Wave Absorption

Small, Год журнала: 2023, Номер 19(42)

Опубликована: Июнь 20, 2023

The combination of carbon materials and magnetic elements is considered as an effective strategy to obtain high-performance electromagnetic wave (EMW) absorption materials. However, using nanoscale regulation the optimization composite material dielectric properties enhanced loss facing significant challenges. Here, constant capability skeleton loaded with Cr compound particles are further tuned enhance EMW performance. After 700 °C thermal resuscitation Cr3-polyvinyl pyrrolidone material, chromium represented a needle-shaped structure nanoparticles, which fixed on derived from polymer. size-optimized CrN@PC composites obtained after substitution more electronegative nitrogen anion-exchange strategy. minimum reflection value -105.9 dB at CrN particle size 5 nm, bandwidth 7.68 GHz (complete Ku-band coverage) 3.0 mm. This work overcomes limitations impedance matching imbalance deficiency in carbon-based through tuning, opens new way ultra-high attenuation capability.

Язык: Английский

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Construction of three-dimensional conductive network and heterogeneous interfaces via different ratio for tunable microwave absorption

Advanced Composites and Hybrid Materials, Год журнала: 2023, Номер 6(6)

Опубликована: Окт. 16, 2023

Язык: Английский

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Recent advances in construction strategies and multifunctional properties of flexible electromagnetic wave absorbing materials

Materials Research Bulletin, Год журнала: 2023, Номер 171, С. 112630 - 112630

Опубликована: Ноя. 22, 2023

Язык: Английский

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Heterostructure design of hydrangea-like Co2P/Ni2P@C multilayered hollow microspheres for high-efficiency microwave absorption

Journal of Material Science and Technology, Год журнала: 2023, Номер 181, С. 104 - 114

Опубликована: Окт. 30, 2023

Язык: Английский

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Kirkendall Effect‐Induced Ternary Heterointerfaces Engineering for High Polarization Loss MOF‐LDH‐MXene Absorbers

Small, Год журнала: 2024, Номер 20(48)

Опубликована: Авг. 29, 2024

Heterogeneous interfacial engineering has garnered widespread attention for optimizing polarization loss and enhancing the performance of electromagnetic wave absorption. A novel Kirkendall effect-assisted electrostatic self-assembly method is employed to construct a metal-organic framework (MOF, MIL-88A) decorated with Ni-Fe layered double hydroxide (LDH), forming multilayer nano-cage coated Ti

Язык: Английский

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State-of-the-art synthesis strategy for nitrogen-doped carbon-based electromagnetic wave absorbers: from the perspective of nitrogen source

Advanced Composites and Hybrid Materials, Год журнала: 2023, Номер 6(6)

Опубликована: Дек. 1, 2023

Язык: Английский

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Compositional and Hollow Engineering of Silicon Carbide/Carbon Microspheres as High-Performance Microwave Absorbing Materials with Good Environmental Tolerance

Nano-Micro Letters, Год журнала: 2024, Номер 16(1)

Опубликована: Апрель 2, 2024

Abstract Microwave absorbing materials (MAMs) characterized by high absorption efficiency and good environmental tolerance are highly desirable in practical applications. Both silicon carbide carbon considered as stable MAMs under some rigorous conditions, while their composites still fail to produce satisfactory microwave performance regardless of the improvements compared with individuals. Herein, we have successfully implemented compositional structural engineering fabricate hollow SiC/C microspheres controllable composition. The simultaneous modulation on dielectric properties impedance matching can be easily achieved change composition these composites. formation structure not only favors lightweight feature, but also generates considerable contribution attenuation capacity. With synergistic effect structure, optimized composite exhibits excellent performance, whose strongest reflection loss intensity broadest effective reach − 60.8 dB 5.1 GHz, respectively, its actually superior those most previous studies. In addition, stability tests capacity after exposure harsh conditions Radar Cross Section simulation data demonstrate that from optimization a bright prospect

Язык: Английский

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