Construction of multiple interfaces and dielectric/magnetic heterostructures in electromagnetic wave absorbers with enhanced absorption performance: A review

Cheng, Junye; Zhang, Huibin; Xiong, Yingfei; Gao, Lingfeng; Wen, Bo; Raza, Hassan; Wang, Hao; Zheng, Guang; Zhang, Deqing; Zhang, Han

doi:10.1016/j.jmat.2021.02.017

Cited by 125 publications

(49 citation statements)

References 288 publications

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“…The closer the Z value is to 1, the better the impedance match of the material is. [19,49] When the frequency of EM wave and the thickness of absorber are fixed, the value of Z is only related to the complex permittivity and the complex permeability. [19] Among them, the adjustment of dielectric constant is the key step toward good impedance…”

Section: Resultsmentioning

confidence: 99%

Integrating Multi‐Heterointerfaces in a 1D@2D@1D Hierarchical Structure via Autocatalytic Pyrolysis for Ultra‐Efficient Microwave Absorption Performance

Huan

Wang

Deng

et al. 2022

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Developing microwave absorption (MA) materials with ultrahigh efficiency and facile preparation method remains a challenge. Herein, a superior 1D@2D@1D hierarchical structure integrated with multi‐heterointerfaces via self‐assembly and an autocatalytic pyrolysis is designed to fully unlock the microwave attenuation potential of materials, realizing ultra‐efficient MA performance. By precisely regulating the morphology of the metal organic framework precursor toward improved impedance matching and intelligently integrating multi‐heterointerfaces to boosted dielectric polarization, the specific return loss value of composites can be effectively tuned and optimized to −1002 dB at a very thin thickness of 1.8 mm. These encouraging achievements shed fresh insights into the precise design of ultra‐efficient MA materials.

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Section: Resultsmentioning

confidence: 99%

Integrating Multi‐Heterointerfaces in a 1D@2D@1D Hierarchical Structure via Autocatalytic Pyrolysis for Ultra‐Efficient Microwave Absorption Performance

Huan

Wang

Deng

et al. 2022

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“…As known, the impedance matching is the primary consideration for the designs of excellent EM wave absorber [ 51 ]. Generally, the impedance matching is greatly affected by the complex permittivity and the complex permeability [ 52 , 53 ]. Thus, reasonable regulation of EM parameter through adjusting the content of compound LDH and filler loading of LDHT-x in PVDF could be effective in achieving impedance matching.…”

Section: Resultsmentioning

confidence: 99%

“…Besides, bending Ti 3 C 2 T x MXene sheets with random orientation is beneficial to construct 3D conductive network to enable free migration of electrons in conductive pathways, which would further enhance the conduction loss to consume the EM wave by converting EM energy into thermal energy [ 56 ]. Simultaneously, 3D porous hierarchical NiCo compound@MXene composites can provide multiple reflection and scattering to prolong the transmission path of electromagnetic waves, leading to the dissipation of electromagnetic energy [ 43 , 53 ]. Meanwhile, substantial termination functional groups and intrinsic defects of layered Ti 3 C 2 T x MXene as well as the oxygen vacancies of NiCo TMO/LDH caused by calcination effectively optimize the impedance matching, while giving rise to the enhanced dipole polarization and defect polarization.…”

Section: Resultsmentioning

confidence: 99%

3D Ultralight Hollow NiCo Compound@MXene Composites for Tunable and High-Efficient Microwave Absorption

et al. 2021

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The 3D hollow hierarchical architectures tend to be designed for inhibiting stack of MXene flakes to obtain satisfactory lightweight, high-efficient and broadband absorbers. Herein, the hollow NiCo compound@MXene networks were prepared by etching the ZIF 67 template and subsequently anchoring the Ti3C2Tx nanosheets through electrostatic self-assembly. The electromagnetic parameters and microwave absorption property can be distinctly or slightly regulated by adjusting the filler loading and decoration of Ti3C2Tx nanoflakes. Based on the synergistic effects of multi-components and special well-constructed structure, NiCo layered double hydroxides@Ti3C2Tx (LDHT-9) absorber remarkably achieves unexpected effective absorption bandwidth (EAB) of 6.72 GHz with a thickness of 2.10 mm, covering the entire Ku-band. After calcination, transition metal oxide@Ti3C2Tx (TMOT-21) absorber near the percolation threshold possesses minimum reflection loss (RLmin) value of − 67.22 dB at 1.70 mm within a filler loading of only 5 wt%. This work enlightens a simple strategy for constructing MXene-based composites to achieve high-efficient microwave absorbents with lightweight and tunable EAB."Image missing"

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“…First, the samples are mixed with paraffin with different mass ratio under 70 °C and then compressed into rings with natural cooling (diameter of the rings: φ ext = 7.00 mm, φ int = 3.0 mm.) Normally, as for a absorber, the absorption strength mainly depends on the magnetic loss and dielectric loss, which are defined by the complex permeability ( μ r ) and permittivity ( ε r ) [ 40 – 42 ]: …”

Section: Resultsmentioning

confidence: 99%

MoS2-Decorated/Integrated Carbon Fiber: Phase Engineering Well-Regulated Microwave Absorber

et al. 2021

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Phase engineering is an important strategy to modulate the electronic structure of molybdenum disulfide (MoS2). MoS2-based composites are usually used for the electromagnetic wave (EMW) absorber, but the effect of different phases on the EMW absorbing performance, such as 1T and 2H phase, is still not studied. In this work, micro-1T/2H MoS2 is achieved via a facile one-step hydrothermal route, in which the 1T phase is induced by the intercalation of guest molecules and ions. The EMW absorption mechanism of single MoS2 is revealed by presenting a comparative study between 1T/2H MoS2 and 2H MoS2. As a result, 1T/2H MoS2 with the matrix loading of 15% exhibits excellent microwave absorption property than 2H MoS2. Furthermore, taking the advantage of 1T/2H MoS2, a flexible EMW absorbers that ultrathin 1T/2H MoS2 grown on the carbon fiber also performs outstanding performance only with the matrix loading of 5%. This work offers necessary reference to improve microwave absorption performance by phase engineering and design a new type of flexible electromagnetic wave absorption material to apply for the portable microwave absorption electronic devices.

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Construction of multiple interfaces and dielectric/magnetic heterostructures in electromagnetic wave absorbers with enhanced absorption performance: A review

Cited by 125 publications

References 288 publications

Integrating Multi‐Heterointerfaces in a 1D@2D@1D Hierarchical Structure via Autocatalytic Pyrolysis for Ultra‐Efficient Microwave Absorption Performance

Integrating Multi‐Heterointerfaces in a 1D@2D@1D Hierarchical Structure via Autocatalytic Pyrolysis for Ultra‐Efficient Microwave Absorption Performance

3D Ultralight Hollow NiCo Compound@MXene Composites for Tunable and High-Efficient Microwave Absorption

MoS2-Decorated/Integrated Carbon Fiber: Phase Engineering Well-Regulated Microwave Absorber

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