High-performance electromagnetic wave absorption by two-dimensional mesoporous monolayer Ti3C2Tx MXene

Zhu, Lili; Wu, Wenwen; Chen, Jingjing; Hu, Zuming; Yu, Junrong; Wang, Yan

doi:10.1016/j.cej.2024.150649

Cited by 21 publications

(1 citation statement)

References 38 publications

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“…Excellent electrical conductivity enables high EMI shielding efficiency for HBM, CBM, and SBM films, whose primary shielding mechanism is absorption, partly due to their layered structure. On the one hand, densification makes the MXene film’s internal structure more compact, increasing the contact area between the electromagnetic waves and the material, and enhancing the absorption efficiency . On the other hand, the dense MXene film reduces the internal voids, thereby decreasing the scattering and reflection of electromagnetic waves within the material, leading to more electromagnetic energy being absorbed by the material.…”

Section: Mxene Unitary Electromagnetic Shielding Materialsmentioning

confidence: 99%

MXene Composite Electromagnetic Shielding Materials: The Latest Research Status

Liu,

Zhao

2024

ACS Appl. Mater. Interfaces

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MXene emerges as a premier candidate for electromagnetic shielding owing to its unique properties as a novel two-dimensional material. Its exceptional electrical conductivity, chemical reactivity, surface tunability, and facile processing render it highly suitable for diverse electromagnetic shielding applications. The research status of MXene and MXene-based electromagnetic shielding materials is systematically discussed in this paper. First, the research status of MXene as a single-component electromagnetic shielding material is briefly introduced. Subsequently, the research status of composite structures constructed by MXene with polymers, carbon derivatives, and ferrites is introduced in detail. Furthermore, the research progress of MXene-based ternary and quaternary composite electromagnetic shielding materials is further focused. Finally, the application of MXene-based composite electromagnetic shielding materials is prospected. A deeper understanding of MXene’s electromagnetic shielding properties is facilitated by this paper, providing the direction for the future development of two-dimensional materials in the design and processing of electromagnetic shielding materials.

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Section: Mxene Unitary Electromagnetic Shielding Materialsmentioning

confidence: 99%

MXene Composite Electromagnetic Shielding Materials: The Latest Research Status

Liu,

Zhao

2024

ACS Appl. Mater. Interfaces

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Multifunctional Anisotropic Aerogels for Intelligent Electromagnetic Wave Absorption

Yin,

Lin,

Wang

et al. 2024

Adv Funct Materials

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The rapidly developing modern society has higher requirements for intelligent electromagnetic wave absorbing (EMA) materials than ever before. Herein, lightweight, multifunctional metal‐free carbon‐based aerogels (RCPs) with a longitudinal honeycomb porous framework and a transverse neatly layered structure are obtained by heat‐treating graphene oxide/oxidized carbon nanotubes/hexachlorocyclotriphosphazene complex to simultaneously achieve the tunable EMA, flame retardancy, and thermal insulation. The anisotropic structure ensures the tunable properties of the carbon aerogels along with tilt angles according to environmental needs. The honeycomb porous structure effectively promotes multiple reflections and scatterings of electromagnetic waves compared with the layered structure, maximizing the penetration inside the material and thus a high EMA performance. The optimized R10C2P‐4 exhibits a minimum reflection loss in the longitudinal direction of−61.5 dB, while the value is as low as −22.4 dB in the transverse direction. Furthermore, the porous structure adequately inhibits the spread of heat, accompanied by the phosphorus species induced by hexachlorocyclotriphosphazene pyrolysis, endowing a good flame retardancy and thermal insulation with a low thermal conductivity of 20.6 mW m−1 K−1 in the longitudinal direction, rather than the transverse direction. This work provides an ingenious insight into the design of multifunctional EMA materials, adapting flexibly to various application requirements.

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An Urchin‐Inspired Broadband and Ultralight Microwave Absorber

Zhang,

Gong,

Zeng

et al. 2025

Adv Funct Materials

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The incompatibility between low and high frequencies, and the constraints of thickness and absorption bandwidth, are great challenges for electromagnetic wave (EMW) absorbers. The combination of microscopic wrinkled morphology and macroscopic stacking structure offers the possibility of constructing lightweight and broadband EMW‐absorbing materials. Herein an artificial periodic unit is demonstrated, wCNT@PS/R, which consists of the urchin‐inspired wrinkled‐carbon nanotube (CNT)‐coated polystyrene (PS) spheres and the organosilicon rubber matrix. The unit thickness and the unit geometry are studied and optimized. Due to the good impedance matching, excellent macrostructural reflections, and strong dielectric loss, the pentagon unit achieves a promising effect absorption band (EAB) of 12.61 GHz, covering both the low‐frequency (S‐ and C‐band) and the high‐frequency (X‐ and Ku‐band) bands. The thickness is 4.0 mm and the total density is as low as 0.194 g cm−3, which provides a new idea for the cost‐effective preparation of thin, ultralight, and broadband EMW absorbers.

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High-performance electromagnetic wave absorption by two-dimensional mesoporous monolayer Ti3C2Tx MXene

Cited by 21 publications

References 38 publications

MXene Composite Electromagnetic Shielding Materials: The Latest Research Status

MXene Composite Electromagnetic Shielding Materials: The Latest Research Status

Multifunctional Anisotropic Aerogels for Intelligent Electromagnetic Wave Absorption

An Urchin‐Inspired Broadband and Ultralight Microwave Absorber

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