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Issue 15, 2017
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Hierarchical NiCo2O4/Co3O4/NiO porous composite: a lightweight electromagnetic wave absorber with tunable absorbing performance

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Abstract

Hierarchical NiCo2O4/Co3O4/NiO composite was fabricated through a facile hydrothermal method, followed by a post-annealing treatment. The obtained ternary composite, with a flower-like morphology, consists of radially assembled porous nanosheets. Benefiting from the unique structure and the synergistic effect among multiple components, the NiCo2O4/Co3O4/NiO composite exhibited strong electromagnetic wave (EMW) absorption in both low-frequency and high-frequency regions by simply changing its filler loading in the matrix. The absorber with a filler loading of 30 wt% possessed a reflection loss of −28.6 dB at a small layer thickness of 1.64 mm in the Ku band, while the absorber with less filler loading at 20 wt% achieved a reflection loss of −57.0 dB in the C band. The light weight, small thickness, strong and tunable absorbing property of the NiCo2O4/Co3O4/NiO composite make it attractive for developing a high-performance electromagnetic wave absorber.

Graphical abstract: Hierarchical NiCo2O4/Co3O4/NiO porous composite: a lightweight electromagnetic wave absorber with tunable absorbing performance

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Publication details

The article was received on 29 Nov 2016, accepted on 12 Mar 2017 and first published on 13 Mar 2017


Article type: Paper
DOI: 10.1039/C6TC05167G
Citation: J. Mater. Chem. C, 2017,5, 3770-3778
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    Hierarchical NiCo2O4/Co3O4/NiO porous composite: a lightweight electromagnetic wave absorber with tunable absorbing performance

    X. Liu, C. Hao, H. Jiang, M. Zeng and R. Yu, J. Mater. Chem. C, 2017, 5, 3770
    DOI: 10.1039/C6TC05167G

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