Lightweight graphene aerogels by decoration of 1D CoNi chains and CNTs to achieve ultra-wide microwave absorption

Zhao, Biao; Li, Yang; Ji, Hanyu; Bai, Pengwei; Wang, Shuai; Fan, Bingbing; Guo, Xiaoqin; Zhang, Rui

doi:10.1016/j.carbon.2021.01.136

Cited by 206 publications

(62 citation statements)

References 70 publications

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“…[15,16] With regard to latter route, carbon-based materials such as, graphene and carbon nanotube have been developed as lightweight matrix to support metal nanoparticles. [17,18] They also can prevent metal nanoparticles from being oxidized by encapsulating. However, metal nanoparticles are only the decoration instead of the main part in composite and it is more suitable to be called carbon-based EM wave absorbers.…”

mentioning

confidence: 99%

Lightweight Ni Foam‐Based Ultra‐Broadband Electromagnetic Wave Absorber

Qin

Zhang

Zhao

2021

Adv Funct Materials

282

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Skin effect and high density are the main reasons that restrict the search of lightweight and high-performance metal-based electromagnetic (EM) wave absorbing materials. Although nanostructured metal materials have been fabricated to solve above problems, poor dispersibility and chemical stability issues brought about by high surface energy due to existing nano-size effect. In this work, lightweight Ni foam with NiO/NiFe 2 O 4 in situ growth composites are fabricated by a facile and universal route as an effective alternative to high-performance metal-based EM wave absorber. Impressively, it is found that the foam structure and NiO/NiFe 2 O 4 /Ni components can synergistically boost EM wave absorption capacity. In detail, impedance matching from foam structure and energy dissipation from interfacial polarization and defect induced polarization provided by NiO/NiFe 2 O 4 mainly contributes to its ultra-broadband EM wave absorption performance. As a result, the as-prepared sample (0.06 g•cm −3 ) delivers a wide absorption bandwidth of 14.24 GHz and thin thickness of 0.6 mm, as well as, high specific effective absorption bandwidth of 19444.4 GHz•g −1 •cm −2 . This work sheds light on the novel view on the synergistic effect of structure and components on EM wave absorption behaviors and demonstrates a new pathway for preparation of lightweight and high-performance metal-based EM wave absorbers.

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mentioning

confidence: 99%

Lightweight Ni Foam‐Based Ultra‐Broadband Electromagnetic Wave Absorber

Qin

Zhang

Zhao

2021

Adv Funct Materials

282

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“…By and large, studies on NC and Ni/NC‐composites revealed that, with increasing magnetic inclusions, molar polarization gets modified. Behaviour of the constitutive parameters (ϵ(ω), μ(ω) provided in supporting information Figure S4) played vital role in analysing microwave power dissipation in which real part represents storage capability and imaginary symbolizes dissipation of incident power [18,21,24] . Both imaginary parts are observed to be increased with % of Ni, maintaining a flat behaviour without any significant straggling.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, Ni@TiO and Ni@SiO 2 showed enhanced microwave reflection loss (maximum) upto −58.2 dB @10.4 GHz with a thickness of ∼2.1 mm and absorption bandwidth of up to 8.1 GHz [17] . Further, bimetallic compounds of NiCo, FeNi, FeCo and NiCu were used as an electromagnetic wave absorbing materials with outstanding absorption properties [18,19] . Zhang et al.…”

Section: Introductionmentioning

confidence: 99%

X‐band Scattering Characteristics of Nickel/Nanocarbon Composites for Anti‐tracking Application

et al. 2021

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Creating clutter in high resolution seeking trackers is of tactical importance which could be achieved by the electromagnetic interference (EMI) shielding. Herein, we report on X‐band (8–12 GHz) scattering performance of nickel/nano‐carbon‐composites for architecting an effective EMI shield. Composite material is prepared by facile, one step, solid state combustion technique with variable 1–5 Ni % and characterized using x‐ray diffractometry, infrared‐,uv‐visible, energy dispersive x‐ray spectroscopic techniques, and scanning electron microscopy. Further, composite, transformed into coaxial and rectangular shaped specimens, are subjected to s‐parameter and reflection loss studies, respectively, over 8–12 GHz. In analysis, incorporation of Ni, majorly, forms crystalline NiO (d[111]) and Ni2O3 (d[002]) phases dispersed within the nanocarbon network which are responsible to create asymmetric stretching bond between Ni−O−C (νas ∼1130 cm−1). Dispersion facilitates synergistic magneto‐dielectric coupling to provide long range ordering of polarization, mainly, via electronic transitions between Ni−3d to O−2p states to engage incident microwave power effectively. At highest Ni inclusion, composite showed>95 % shielding effectiveness with infinite bandwidth and>99 % return loss@8.97 GHz matching frequency.

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“…[ 12–15 ] Therefore, how to effectively design and modulate the structure, component, morphology, and electromagnetic (EM) parameters of the absorber is becoming the core challenge to achieve high‐performance MAMs. Based on the principles of structural design and microwave absorption theory, a variety of new materials such as magnetic materials, [ 4 ] ferrite, [ 16 ] carbon materials, [ 17 ] graphene, [ 18 ] MOF, [ 19 ] carbon nanotubes, [ 20 ] etc., and some novel morphological structures like porous structure, [ 21 ] conductive gels, [ 22 ] sandwich or flower‐like, [ 23,24 ] core–sheath structure, [ 25 ] heterojunction, [ 26 ] 3D hybrid nanostructures, [ 27 ] etc, have been widely investigated to optimize the impedance matching and then enhance the MA property with the synergistic effect of multiloss mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Structural Modifications and Electromagnetic Property Regulations of Ti₃AlC₂ MAX for Enhancing Microwave Absorption through the Strategy of Fe Doping

Bai

et al. 2022

Adv Materials Inter

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Microwave absorption enhancements through atomic doping in traditional materials remain a significant challenge. Herein, the MAX phase materials of Fe‐doped Ti3AlC2 (xFe‐Ti3AlC2, abbreviated as TFAC‐x, x = 0, 0.2, 0.3, 0.4) are synthesized via solid‐phase reaction method. The X‐ray diffraction, Raman, and scanning electron microscopy confirm that the TFAC‐x samples are of high quality with multiphase coexistence structure and abundant interfaces. Relying on the improved impedance matching originating from structural modulation, the synergistic effects of dielectric loss and magnetic loss, as well as the enhanced interfacial polarization and defect dipole polarization, both the microwave absorption intensity and bandwidth are greatly strengthened. Accordingly, the minimum reflection loss of TFAC‐3 sample can achieve ‐33.3 dB and the absorption bandwidth could reach 3.9 GHz with the thickness of only 1.5 mm. Moreover, the investigated frequency can cover 86% through regulating their thickness from 1.5 to 5 mm, showing the excellent frequency modulation effect. The revealed improvements in both the microwave absorption performance and properties of TFAC‐x may enlighten the designing of microwave absorption materials and have potentials for widespread applications.

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Lightweight graphene aerogels by decoration of 1D CoNi chains and CNTs to achieve ultra-wide microwave absorption

Cited by 206 publications

References 70 publications

Lightweight Ni Foam‐Based Ultra‐Broadband Electromagnetic Wave Absorber

Lightweight Ni Foam‐Based Ultra‐Broadband Electromagnetic Wave Absorber

X‐band Scattering Characteristics of Nickel/Nanocarbon Composites for Anti‐tracking Application

Structural Modifications and Electromagnetic Property Regulations of Ti₃AlC₂ MAX for Enhancing Microwave Absorption through the Strategy of Fe Doping

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Lightweight graphene aerogels by decoration of 1D CoNi chains and CNTs to achieve ultra-wide microwave absorption

Cited by 206 publications

References 70 publications

Lightweight Ni Foam‐Based Ultra‐Broadband Electromagnetic Wave Absorber

Lightweight Ni Foam‐Based Ultra‐Broadband Electromagnetic Wave Absorber

X‐band Scattering Characteristics of Nickel/Nanocarbon Composites for Anti‐tracking Application

Structural Modifications and Electromagnetic Property Regulations of Ti3AlC2 MAX for Enhancing Microwave Absorption through the Strategy of Fe Doping

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Product

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Structural Modifications and Electromagnetic Property Regulations of Ti₃AlC₂ MAX for Enhancing Microwave Absorption through the Strategy of Fe Doping