Constructing multiple heterogeneous interfaces in the composite of bimetallic MOF-derivatives and rGO for excellent microwave absorption performance

Zhao, Yazhen; Wang, Wei; Wang, Junnan; Zhai, Junjian; Lei, Xuegong; Zhao, Wu; Li, Jiangnan; Yang, Haowen; Hui, Hui; Yan, Junfeng

doi:10.1016/j.carbon.2020.11.090

Cited by 128 publications

(39 citation statements)

References 49 publications

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“…Coupling with highly conductive materials is undoubtedly a feasible solution. For example, Zhao et al [ 26 ] successfully synthesized CoNi@NCPs-rGO composites by pyrolyzing the ZIF-67@CoNi LDHs-GO precursor. The optimal RL min of the compounds could reach up to − 58.2 dB and the EAB was 4.03 GHz at 2.5 mm with a filler loading of 30%.…”

Section: Introductionmentioning

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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Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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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

300

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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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“…EM measurements manifested that CoNi@NC/rGO could be a promising microwave absorber with strong RL intensity (− 68.0 dB) and broad EAB (6.72 GHz) with the absorber thickness of 3.0 and 2.5 mm, respectively, and its performance was greatly superior to those of individual CoNi@NC or CoNi/rGO. Zhao et al also demonstrated the positive contribution of alloy nanoparticles and rGO nanosheets clearly, where CoNi@NCPs-rGO could lower minimum RL intensity of Co@NCPs from − 49.8 to − 58.2 dB [ 84 ]. Very interestingly, Wang et al decorated bi-metallic FeCo-ZIFs on the surface of freeze-drying rGO aerogel and then converted the precursor into porous cocoon-like FeCo/NC/rGO composite [ 85 ].…”

Section: Composition Optimization In Mofs-derived Magnetic Carbon-based Microwave Absorbersmentioning

confidence: 99%

Composition Optimization and Microstructure Design in MOFs-Derived Magnetic Carbon-Based Microwave Absorbers: A Review

et al. 2021

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Magnetic carbon-based composites are the most attractive candidates for electromagnetic (EM) absorption because they can terminate the propagation of surplus EM waves in space by interacting with both electric and magnetic branches. Metal-organic frameworks (MOFs) have demonstrated their great potential as sacrificing precursors of magnetic metals/carbon composites, because they provide a good platform to achieve high dispersion of magnetic nanoparticles in carbon matrix. Nevertheless, the chemical composition and microstructure of these composites are always highly dependent on their precursors and cannot promise an optimal EM state favorable for EM absorption, which more or less discount the superiority of MOFs-derived strategy. It is hence of great importance to develop some accompanied methods that can regulate EM properties of MOFs-derived magnetic carbon-based composites effectively. This review comprehensively introduces recent advancements on EM absorption enhancement in MOFs-derived magnetic carbon-based composites and some available strategies therein. In addition, some challenges and prospects are also proposed to indicate the pending issues on performance breakthrough and mechanism exploration in the related field.

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Constructing multiple heterogeneous interfaces in the composite of bimetallic MOF-derivatives and rGO for excellent microwave absorption performance

Cited by 128 publications

References 49 publications

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

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

Lightweight Ni Foam‐Based Ultra‐Broadband Electromagnetic Wave Absorber

Composition Optimization and Microstructure Design in MOFs-Derived Magnetic Carbon-Based Microwave Absorbers: A Review

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