Fabrication of flake-like NiCo2O4/reduced graphene oxide/melamine-derived carbon foam as an excellent microwave absorber

International Journal of Minerals Metallurgy and Materials, Год журнала: 2025, Номер 32(3), С. 556 - 565

Опубликована: Фев. 1, 2025

Язык: Английский

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Controllable Construction of Hollow Ni/NiO@PPy Particles for Broadband and Highly Efficient Microwave Absorption

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 5, 2025

Abstract Microwave‐absorbing materials are widely used in electromagnetic protection and military stealth fields. Hollow structure materials, as efficient microwave absorbing have garnered considerable attention, since they beneficial to multiple reflection enhance the attenuation loss of microwaves. Herein, a strategy is proposed prepare hollow Ni/NiO@PPy particles using water‐soluble template method combined with situ polymerization process. The cuboid constructed Na 2 SO 4 templates then filled into epoxy resin form composite films excellent absorption properties. film under optimal conditions exhibits minimum value −72.14 dB rate more than 99.99% filling content 10 wt.%. By adjusting thickness, an effective bandwidth 15.94 GHz can be achieved, which almost completely covers S, C, X, Ku bands. CST simulation results confirm outstanding radar cross‐section film. Remarkably, ultra‐low 2.5 wt.%, still achieves 99.90%, demonstrating highly content.

Язык: Английский

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Harmonization of heterointerface states to enhance built-in electric field effects for electromagnetic wave absorption

Journal of Material Science and Technology, Год журнала: 2025, Номер 229, С. 223 - 234

Опубликована: Фев. 16, 2025

Язык: Английский

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Multiple Charge Carriers Manipulation Toward Semiconductive Ceramic Nanocomposites for Corrosion‐Resistant Electromagnetic Wave Absorption

Small, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Abstract The modulation of transport properties in ceramic‐based semiconductors can be used to optimize the electromagnetic response mechanism and performance. A semiconductor ceramic foam interlayer wall (SCFW) is designed by a physical vapor deposition method. structural SCFW composed semiconductor‐insulator‐semiconductor layers, incorporating composite system SiC, Al 4.8 Si 1.2 O 9.6 , 2 3 . Moreover, hierarchical network structure controlled pyrolysis‐deposition kinetic process. Electrons holes are transported through heterojunctions between SiC achieving effective charge relaxation. matrix provides lightweight (density 0.967 g cm −3 ), while determines excellent wave (EMW) absorption performance SCFW, with an bandwidth up 14.8 GHz under (minimum reflection loss RL min = −50.6 dB). has been proven exhibit corrosion resistance thermal insulation properties, conductivity 0.025 W m −1 K This study valuable insights into design dielectric property optimization nanocomposites, which leads strong polarization loss, opening new avenues for application EMW absorbers, ceramics.

Язык: Английский

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Achieving Tunable Perfect Microwave Absorption through a Reconfigurable Cementitious Metastructure Integrating Flexible Carbon Nanotube Frequency Selective Surface

Carbon, Год журнала: 2025, Номер unknown, С. 120018 - 120018

Опубликована: Янв. 1, 2025

Язык: Английский

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Enhancing adsorption of Cr(VI) from aqueous solutions: Core-Shell engineered Polyaniline@MOF composites overcome Thermodynamic-Kinetic Trade-Off effect

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 131839 - 131839

Опубликована: Янв. 1, 2025

Язык: Английский

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Advancements in 2D Titanium Carbide (MXene) for Electromagnetic Wave Absorption: Mechanisms, Methods, Enhancements, and Applications

Small Methods, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Abstract With the advent of 5G era, there has been a marked increase in research interest concerning electromagnetic wave‐absorbing materials. A critical challenge remains improving properties these materials while satisfying diverse application demands. MXenes, identified as prominent “emerging” 2D for wave absorption, offer unique advantages that are expected to drive advancements and innovations this field. This review emphasizes synthesis benefits provided by structural characteristics MXenes performance enhancements achieved through their combination with other absorbing Material requirements, approaches, conceptual frameworks integrated underscore advantages. The study provides thorough analysis MXene‐absorbing composites, going beyond basic classification address preparation modification processes affecting absorption composites. Attention is directed techniques, design principles, influence on composite performance. Additionally, potential applications devices summarized. concludes addressing challenges currently confronting MXene outlining developmental trends, aiming guidance subsequent domain.

Язык: Английский

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Construction of 0D/2D heterojunction in 3D MXene/GQDs hybrid aerogels for enhanced broad electromagnetic wave absorption

Journal of Alloys and Compounds, Год журнала: 2025, Номер 1016, С. 179021 - 179021

Опубликована: Фев. 1, 2025

Язык: Английский

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Constructing Schottky contacts via vertical growth of SnS2 nanosheets on hollow microspheres for efficient microwave absorption

Journal of Material Science and Technology, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

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Synergistically magnetic and dielectric properties of two dimensional Fe3Al@PPy lamellae exhibiting broadband and strong electromagnetic wave absorption

Sustainable materials and technologies, Год журнала: 2024, Номер unknown, С. e01127 - e01127

Опубликована: Сен. 1, 2024

Язык: Английский

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