Recent advances in MXenes composites for electromagnetic interference shielding and microwave absorption

Wang, Zhen; Cheng, Zhi; Fang, Changqing; Hou, Xianliang; Xie, Li

doi:10.1016/j.compositesa.2020.105956

Cited by 201 publications

(70 citation statements)

References 153 publications

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“…MXenes have been studied as EMI shielding materials due to their outstanding EMI shielding performance, low density and special metallic features [ 13 , 14 ]. The MXenes composites with different structures have been fabricated to improve its EMI shielding performance [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Interference Shielding Anisotropy of Unidirectional CFRP Composites

Hong

2021

Materials

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Carbon fiber-reinforced polymer (CFRP) composites have excellent mechanical properties and electromagnetic interference (EMI) shielding performance. Recently, their EMI shielding performance has also attracted great attention in many industrial fields to resolve electromagnetic pollution. The present paper mainly investigated the EMI shielding anisotropy of CFRP materials using a specified set-up of free-space measurement. The electrical conductivity of unidirectional CFRP composites was identified to vary with the fiber orientation angles, and the formula was proposed to predict the results consistent with the experimental. The obvious EMI shielding anisotropy of unidirectional CFRP composites was clarified by free-space measurement. The theoretical formula can predict the EMI shielding value at different carbon fiber orientation angles, and the predicted results were highly consistent with the experimental results. A comparison of the free-space measurement and the coaxial transmission line method was also conducted, which indicated that special attention should be paid to the influence of the anisotropy of CFRP composites on the shielding results. With those results, the mechanism of EMI shielding anisotropy of CFRP composites is clarified, which will provide an effective design of EMI shielding products with a designable shielding direction and frequency.

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Section: Introductionmentioning

confidence: 99%

Electromagnetic Interference Shielding Anisotropy of Unidirectional CFRP Composites

Hong

2021

Materials

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“…They have a general formula of M n+1 X n T x , where M represents an early transition metal (e.g., Ti, Mo, and Nb); X usually is C and/or N; n = 1, 2, or 3; and T x denotes the surface termination (=O, -OH, and/or -F). The distinguishing characteristics of MXenes, including special accordion-like morphology, outstanding electrical conductivity, and rich functional groups surface, have captured enormous attention in many applications, especially for microwave absorption (MA) [10,11].…”

Section: Introductionmentioning

confidence: 99%

Novel hierarchical structure of MoS2/TiO2/Ti3C2Tx composites for dramatically enhanced electromagnetic absorbing properties

et al. 2021

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In order to prevent the microwave leakage and mutual interference, more and more microwave absorbing devices are added into the design of electronic products to ensure its routine operation. In this work, we have successfully prepared MoS2/TiO2/Ti3C2Tx hierarchical composites by one-pot hydrothermal method and focused on the relationship between structures and electromagnetic absorbing properties. Supported by comprehensive characterizations, MoS2 nanosheets were proved to be anchored on the surface and interlayer of Ti3C2Tx through a hydrothermal process. Additionally, TiO2 nanoparticles were obtained in situ. Due to these hierarchical structures, the MoS2/TiO2/Ti3C2Tx composites showed greatly enhanced microwave absorbing performance. The MoS2/TiO2/Ti3C2Tx composites exhibit a maximum reflection loss value of −33.5 dB at 10.24 GHz and the effective absorption bandwidth covers 3.1 GHz (13.9–17 GHz) at the thickness of 1.0 mm, implying the features of wide frequency and light weight. This work in the hierarchical structure of MoS2/TiO2/Ti3C2Tx composites opens a promising door to the exploration of constructing extraordinary electromagnetic wave absorbents.

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“…According to the electromagnetic wave propagation theory, nanostructured materials with multiple interfaces show great potential as microwave absorbers due to their effective interfacial polarization and associated relaxation loss via surface scattering effects [ 6 , 8 , 9 ]. In recent years, plenty of special microstructure materials have been developed extensively and their performance in microwave absorption is generally superior [ 10 ]. For example, Liu and co-workers prepared Co 20 Ni 80 hierarchical structures with flower- and urchin-like morphologies by a facile one-step solvothermal treatment, with the minimum RL of −33.5 dB [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

A Facile Synthesis of NiFe-Layered Double Hydroxide and Mixed Metal Oxide with Excellent Microwave Absorption Properties

Yang

et al. 2021

Molecules

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Microwave-absorbing materials have attracted increased research interest in recent years because of their core roles in the fields of electromagnetic (EM) pollution precaution and information security. In this paper, microwave-absorbing material NiFe-layered double hydroxide (NiFe-LDH) was synthesized by a simple co-precipitation method and calcined for the fabrication of NiFe-mixed metal oxide (NiFe-MMO). The phase structure and micromorphology of the NiFe-LDH and NiFe-MMO were analyzed, and their microwave-absorbing properties were investigated with a vector network analyzer in 2–18 GHz. Both NiFe-LDH and NiFe-MMO possessed abundant interfaces and a low dielectric constant, which were beneficial to electromagnetic wave absorption, owing to the synergistic effect of multi-relaxation and impedance matching. The optimum reflection loss (RL) of NiFe-LDH and NiFe-MMO was −58.8 dB and −64.4 dB, respectively, with the thickness of 4.0 mm in the C band. This work demonstrates that LDH-based materials have a potential application in electromagnetic wave absorption.

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Recent advances in MXenes composites for electromagnetic interference shielding and microwave absorption

Cited by 201 publications

References 153 publications

Electromagnetic Interference Shielding Anisotropy of Unidirectional CFRP Composites

Electromagnetic Interference Shielding Anisotropy of Unidirectional CFRP Composites

Novel hierarchical structure of MoS2/TiO2/Ti3C2Tx composites for dramatically enhanced electromagnetic absorbing properties

A Facile Synthesis of NiFe-Layered Double Hydroxide and Mixed Metal Oxide with Excellent Microwave Absorption Properties

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