Microwave absorption properties of microporous CoNi@(NiO-CoO) nanoparticles through dealloying

Ni, Chen; Wu, Dan; Xie, Xiubo; Wang, Baolei; Wei, Hongli; Zhang, Yuping; Zhao, Xiangjin; Liu, Li; Wang, Bing; Du, Wei

doi:10.1016/j.jmmm.2020.166631

Cited by 36 publications

(7 citation statements)

References 35 publications

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“…With respect to metal/metal oxide composites, Fe 3 O 4 , NiO, NiFe 2 O 4 , CoFe 2 O 4 composting with metal components are also reported to alleviate impedance match characteristic. [19][20][21][22] Meanwhile, the metal oxides introduction process is time-consuming, not to mention the density issue of such materials is getting worse. Up to now, reports on well-designed morphology and configuration to achieve lightweight and high-performance features simultaneously for metal-based EM wave absorbing materials are scarce.…”

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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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confidence: 99%

Lightweight Ni Foam‐Based Ultra‐Broadband Electromagnetic Wave Absorber

Qin

Zhang

Zhao

2021

Adv Funct Materials

300

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“…In addition, both of the two samples can be indexed to type IV isotherms with H3 hysteresis loops according to the IUPAC classification. 71,72 The decrease of the specific surface area of the carbon is due to the uniform decoration of the Co 3 O 4 particles. Moreover, it can be observed that the pore radii of the celery carbon and celery/150%Co 3 O 4 composite calculated by the BJH method (Fig.…”

Section: Resultsmentioning

confidence: 99%

N-Doped celery-based biomass carbon with tunable Co₃O₄ loading for enhanced-performance of solid-state supercapacitors

Lin

Xie

et al. 2022

New J. Chem.

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“… 45 CoNi@(CoO-NiO) 50 5 − 38.1 2 5.9 Ref. 46 CoNi@SiO 2 @C 50 2.2 − 46 2.2 5.6 Ref. 47 Co-Ni-Sn/PANI 25 3.2 − 36.9 3.2 2.46 Ref.…”

Section: Discussionmentioning

confidence: 99%

Extending effective microwave absorbing bandwidth of CoNi bimetallic alloy derived from binary hydroxides

Chen

Zhao

et al. 2020

Sci Rep

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Effectively broadening microwave absorbing frequency of pure magnetic substances remains a huge challenge. Herein, micro-perspective structures can be controlled through a calcination route. Satisfactorily, the composites prepared at the calcination temperature of 900 °C exhibit excellent microwave attenuation performance with a broad working frequency and appropriate paraffin filling ratio. Remarkably, the composites can reach an extremely high reflection loss (RL) value of − 49.79 dB, and the extended effective working frequency range (RL < − 10 dB) of 6.84 GHz can also be obtained. Superb magnetic loss, admirable dielectric loss, sufficient dipole polarization, as well as superior impedance matching should be band together for obtaining ideal microwave absorbers. The CoNi hydroxides derived bimatallic alloy composites were fabricated via a cost-effective and facile synthesis process, and this work aroused inspirations of designing high-performance microwave absorbers for mataining the sustainable development.

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Microwave absorption properties of microporous CoNi@(NiO-CoO) nanoparticles through dealloying

Cited by 36 publications

References 35 publications

Lightweight Ni Foam‐Based Ultra‐Broadband Electromagnetic Wave Absorber

Lightweight Ni Foam‐Based Ultra‐Broadband Electromagnetic Wave Absorber

N-Doped celery-based biomass carbon with tunable Co₃O₄ loading for enhanced-performance of solid-state supercapacitors

Extending effective microwave absorbing bandwidth of CoNi bimetallic alloy derived from binary hydroxides

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Microwave absorption properties of microporous CoNi@(NiO-CoO) nanoparticles through dealloying

Cited by 36 publications

References 35 publications

Lightweight Ni Foam‐Based Ultra‐Broadband Electromagnetic Wave Absorber

Lightweight Ni Foam‐Based Ultra‐Broadband Electromagnetic Wave Absorber

N-Doped celery-based biomass carbon with tunable Co3O4 loading for enhanced-performance of solid-state supercapacitors

Extending effective microwave absorbing bandwidth of CoNi bimetallic alloy derived from binary hydroxides

Contact Info

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N-Doped celery-based biomass carbon with tunable Co₃O₄ loading for enhanced-performance of solid-state supercapacitors