Construction of hollow copper selenide boxes and S-doping for enhanced electromagnetic wave absorption

Huang, Wei; Wang, Xuan; Wang, Yuansheng; Yan, Liuliu; Li, Yongqing; Wang, Bo; Wang, Yujiang; Wei, Shicheng

doi:10.1016/j.jallcom.2023.171168

Cited by 2 publications

(1 citation statement)

References 42 publications

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“…To sum up, the multilevel heterogeneous interface formed by the selenization treatment can effectively enhance the interfacial effect, improve the polarization loss, and promote the attenuation capacity of the EM wave. To compare the EM wave absorption performance of G/S-NCO/Se with other selenide absorbers, the radar chart based on three evaluation indicators (RL, EAB, and matching thickness) is drawn in Figure f. − It can be seen that G/S-NCO/Se has excellent EM wave absorption performance and good application prospects compared to the congeneric absorbers in the literatures.…”

Section: Resultsmentioning

confidence: 99%

Multilevel Heterogeneous Interfaces Enhanced Polarization Loss of 3D-Printed Graphene/NiCoO₂/Selenides Aerogels for Boosting Electromagnetic Energy Dissipation

Liu,

Ma,

Yang

et al. 2024

ACS Nano

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Heterointerface engineering is an attractive approach to modulating electromagnetic (EM) parameters and EM wave absorption performance. However, the weak interfacial interactions and poor impedance matching would lead to unsatisfactory EM absorption performance due to the limitation of the construction materials and design strategies. Herein, multilevel heterointerface engineering is proposed by in situ growing nanosheet-like NiCoO 2 and selenides with abundant interface structures on 3D-printed graphene aerogel (GA) skeletons, which strengthens the interfacial effect and improves the dielectric polarization loss. Benefiting from the features of substantially enhanced polarization loss and optimized impedance matching, the graphene/S-NiCoO 2 /selenides (G/S-NCO/Se) have achieved brilliant EM wave absorption performance with a strong reflection loss (RL) value of −60.7 dB and a broad effective absorption bandwidth (EAB) of 8 GHz, which is about six times greater than that of the graphene aerogel (−9.8 dB). Moreover, it is further confirmed by charge density differences and off-axis electron holography that a large amount of polarized charge accumulates at the interface, leading to significant polarization relaxation behaviors. This work provides a deep understanding of the effect of a multilevel heterogeneous interface on dielectric polarization loss, which injects a fresh and infinite vitality for designing high-efficiency EM wave absorbers.

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Section: Resultsmentioning

confidence: 99%

Multilevel Heterogeneous Interfaces Enhanced Polarization Loss of 3D-Printed Graphene/NiCoO₂/Selenides Aerogels for Boosting Electromagnetic Energy Dissipation

Liu,

Ma,

Yang

et al. 2024

ACS Nano

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Interfacial engineering design for one-dimensional cobalt-iron selenide nanomaterials as a high-efficiency catalyst for oxygen evolution reaction

Zhang,

Gao,

Han

et al. 2023

Journal of Electroanalytical Chemistry

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Construction of hollow copper selenide boxes and S-doping for enhanced electromagnetic wave absorption

Cited by 2 publications

References 42 publications

Multilevel Heterogeneous Interfaces Enhanced Polarization Loss of 3D-Printed Graphene/NiCoO₂/Selenides Aerogels for Boosting Electromagnetic Energy Dissipation

Multilevel Heterogeneous Interfaces Enhanced Polarization Loss of 3D-Printed Graphene/NiCoO₂/Selenides Aerogels for Boosting Electromagnetic Energy Dissipation

Interfacial engineering design for one-dimensional cobalt-iron selenide nanomaterials as a high-efficiency catalyst for oxygen evolution reaction

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Construction of hollow copper selenide boxes and S-doping for enhanced electromagnetic wave absorption

Cited by 2 publications

References 42 publications

Multilevel Heterogeneous Interfaces Enhanced Polarization Loss of 3D-Printed Graphene/NiCoO2/Selenides Aerogels for Boosting Electromagnetic Energy Dissipation

Multilevel Heterogeneous Interfaces Enhanced Polarization Loss of 3D-Printed Graphene/NiCoO2/Selenides Aerogels for Boosting Electromagnetic Energy Dissipation

Interfacial engineering design for one-dimensional cobalt-iron selenide nanomaterials as a high-efficiency catalyst for oxygen evolution reaction

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Multilevel Heterogeneous Interfaces Enhanced Polarization Loss of 3D-Printed Graphene/NiCoO₂/Selenides Aerogels for Boosting Electromagnetic Energy Dissipation

Multilevel Heterogeneous Interfaces Enhanced Polarization Loss of 3D-Printed Graphene/NiCoO₂/Selenides Aerogels for Boosting Electromagnetic Energy Dissipation