The recent progress of MXene-Based microwave absorption materials

Zhang, Zhiwei; Cai, Zewei; Zeng, Yi; Peng, Yaling; Wang, Ziyuan; Xia, Lun; Ma, Suping; Yin, Zhanzhao; Wang, Ruofeng; Cao, Yishu; Li, Zhuo; Huang, Yi

doi:10.1016/j.carbon.2020.12.060

Cited by 182 publications

(67 citation statements)

References 130 publications

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“…Though plentiful excellent reviews have been reported to introduce the advances of EM wave absorbing materials, [ 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 ] they mainly focus on introducing EM wave loss materials on basis of material categories, such as carbon materials, [ 43 , 44 , 45 , 46 , 47 , 48 ] MOFs deprived materials, [ 49 , 50 , 51 ] boron nitride, [ 52 ] conducting polymers, [ 53 , 54 ] ferrites, [ 55 , 56 , 57 ] sulfides, [ 58 ] and MXene [ 59 , 60 , 61 ] or design of peculiar micro/nanostructure. [ 62 ] As far as we know, the topic that lies on EM wave loss mechanisms and models has been rarely reported.…”

Section: Introductionmentioning

confidence: 99%

Dielectric Loss Mechanism in Electromagnetic Wave Absorbing Materials

2022

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Electromagnetic (EM) wave absorbing materials play an increasingly important role in modern society for their multi-functional in military stealth and incoming 5G smart era. Dielectric loss EM wave absorbers and underlying loss mechanism investigation are of great significance to unveil EM wave attenuation behaviors of materials and guide novel dielectric loss materials design. However, current researches focus more on materials synthesis rather than in-depth mechanism study. Herein, comprehensive views toward dielectric loss mechanisms including interfacial polarization, dipolar polarization, conductive loss, and defect-induced polarization are provided. Particularly, some misunderstandings and ambiguous concepts for each mechanism are highlighted. Besides, in-depth dielectric loss study and novel dielectric loss mechanisms are emphasized. Moreover, new dielectric loss mechanism regulation strategies instead of regular components compositing are summarized to provide inspiring thoughts toward simple and effective EM wave attenuation behavior modulation.

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Section: Introductionmentioning

confidence: 99%

Dielectric Loss Mechanism in Electromagnetic Wave Absorbing Materials

2022

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“…When the thickness of the absorption layer equals a quarter of the penetrating wavelength multiplied by an odd number, the EM wave will be dissipated by interference, where the second reflection of the wave has 180° phase difference relative to the surface reflection. It is worth noting that, in EM wave attenuation-related applications, the bandwidth with more than 90% absorption efficiency is defined as the effective absorption band [ 76 , 77 ]. Therefore, in this work, with an average shielding efficiency of 99.95%, the bandwidth with SE R less than 0.45 dB will be defined as the low reflection bandwidth (LR bandwidth).…”

Section: Resultsmentioning

confidence: 99%

Layered Foam/Film Polymer Nanocomposites with Highly Efficient EMI Shielding Properties and Ultralow Reflection

et al. 2021

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Lightweight, high-efficiency and low reflection electromagnetic interference (EMI) shielding polymer composites are greatly desired for addressing the challenge of ever-increasing electromagnetic pollution. Lightweight layered foam/film PVDF nanocomposites with efficient EMI shielding effectiveness and ultralow reflection power were fabricated by physical foaming. The unique layered foam/film structure was composed of PVDF/SiCnw/MXene (Ti3C2Tx) composite foam as absorption layer and highly conductive PVDF/MWCNT/GnPs composite film as a reflection layer. The foam layer with numerous heterogeneous interfaces developed between the SiC nanowires (SiCnw) and 2D MXene nanosheets imparted superior EM wave attenuation capability. Furthermore, the microcellular structure effectively tuned the impedance matching and prolonged the wave propagating path by internal scattering and multiple reflections. Meanwhile, the highly conductive PVDF/MWCNT/GnPs composite (~ 220 S m−1) exhibited superior reflectivity (R) of 0.95. The tailored structure in the layered foam/film PVDF nanocomposite exhibited an EMI SE of 32.6 dB and a low reflection bandwidth of 4 GHz (R < 0.1) over the Ku-band (12.4 − 18.0 GHz) at a thickness of 1.95 mm. A peak SER of 3.1 × 10–4 dB was obtained which corresponds to only 0.0022% reflection efficiency. In consequence, this study introduces a feasible approach to develop lightweight, high-efficiency EMI shielding materials with ultralow reflection for emerging applications.

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“…For n = 1, an ABABAB stacking sequence is observed, while MXene with n ≥ 2 exhibits ABCABC ordering. Theoretical calculations predict the possibility to obtain about 100 stoichiometric structures, from which approximately 20 different compositions have been synthesized experimentally [21]. Some of the most studied materials of this class are Ti3C2, Ti2N, Nb4C3, Nb2C, and V4C3 [62].…”

Section: Structurementioning

confidence: 99%

“…Consequently, selective etching of element A (for example, Al, Si, Ga, In, and S) leads to the formation of layered M n+1 X n with an "accordion-like" structure. Sometimes the formula M n+1 X n T x is used, where T is added to denote surface functional groups, for example, O, F, OH, H 2 O, and/or Cl [21]. The MXene layers obtained by etching the A element form various surface functional groups depending on the substance with which they react.…”

Section: Introductionmentioning

confidence: 99%

MXenes—A New Class of Two-Dimensional Materials: Structure, Properties and Potential Applications

et al. 2021

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A new class of two-dimensional nanomaterials, MXenes, which are carbides/nitrides/carbonitrides of transition and refractory metals, has been critically analyzed. Since the synthesis of the first family member in 2011 by Yury Gogotsi and colleagues, MXenes have quickly become attractive for a variety of research fields due to their exceptional properties. Despite the fact that this new family of 2D materials was discovered only about ten years ago, the number of scientific publications related to MXene almost doubles every year. Thus, in 2021 alone, more than 2000 papers are expected to be published, which indicates the relevance and prospects of MXenes. The current paper critically analyzes the structural features, properties, and methods of synthesis of MXenes based on recent available research data. We demonstrate the recent trends of MXene applications in various fields, such as environmental pollution removal and water desalination, energy storage and harvesting, quantum dots, sensors, electrodes, and optical devices. We focus on the most important medical applications: photo-thermal cancer therapy, diagnostics, and antibacterial treatment. The first results on obtaining and studying the structure of high-entropy MXenes are also presented.

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The recent progress of MXene-Based microwave absorption materials

Cited by 182 publications

References 130 publications

Dielectric Loss Mechanism in Electromagnetic Wave Absorbing Materials

Dielectric Loss Mechanism in Electromagnetic Wave Absorbing Materials

Layered Foam/Film Polymer Nanocomposites with Highly Efficient EMI Shielding Properties and Ultralow Reflection

MXenes—A New Class of Two-Dimensional Materials: Structure, Properties and Potential Applications

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