Volume 19, Issue 40 2302686
Research Article

In-Situ Fabrication of Sustainable-N-Doped-Carbon-Nanotube-Encapsulated CoNi Heterogenous Nanocomposites for High-Efficiency Electromagnetic Wave Absorption

Xue Zhang

Xue Zhang

Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, 250061 P. R. China

Contribution: ​Investigation (lead), Methodology (lead), Writing - original draft (lead), Writing - review & editing (lead)

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Xuelei Tian

Xuelei Tian

Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, 250061 P. R. China

Contribution: Supervision (lead)

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Jing Qiao

Jing Qiao

School of Mechanical Engineering, Shandong University, Jinan, 250061 P. R. China

Contribution: ​Investigation (equal), Software (lead), Writing - review & editing (equal)

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Xinrui Fang

Xinrui Fang

Jinan Institute of Special Structures of Aviation Industry of China (Jinan 637 Institute of Aviation Industry of China), Jinan, 250000 P. R. China

Contribution: Project administration (equal)

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Kaiye Liu

Kaiye Liu

Jinan Institute of Special Structures of Aviation Industry of China (Jinan 637 Institute of Aviation Industry of China), Jinan, 250000 P. R. China

Contribution: Project administration (equal)

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Chang Liu

Chang Liu

Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, 250061 P. R. China

Contribution: ​Investigation (equal), Software (equal)

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Jingpeng Lin

Jingpeng Lin

Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, 250061 P. R. China

Contribution: ​Investigation (equal), Validation (equal)

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Lutong Li

Lutong Li

Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, 250061 P. R. China

Contribution: ​Investigation (equal), Validation (equal)

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Wei Liu

Wei Liu

State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100 P. R. China

Contribution: Funding acquisition (supporting), Resources (supporting)

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Jiurong Liu

Corresponding Author

Jiurong Liu

Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, 250061 P. R. China

E-mail: [email protected]; [email protected]

Contribution: Conceptualization (lead), Funding acquisition (lead), Supervision (lead)

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Zhihui Zeng

Corresponding Author

Zhihui Zeng

Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, 250061 P. R. China

E-mail: [email protected]; [email protected]

Contribution: Conceptualization (lead), Funding acquisition (lead), Supervision (lead), Writing - review & editing (lead)

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First published: 19 May 2023
Citations: 20

Abstract

Developing carbon encapsulated magnetic composites with rational design of microstructure for achieving high-performance electromagnetic wave (EMW) absorption in a facile, sustainable, and energy-efficiency approach is highly demanded yet remains challenging. Here, a type of N-doped carbon nanotube (CNT) encapsulated CoNi alloy nanocomposites with diverse heterostructures are synthesized via the facile, sustainable autocatalytic pyrolysis of porous CoNi-layered double hydroxide/melamine. Specifically, the formation mechanism of the encapsulated structure and the effects of heterogenous microstructure and composition on the EMW absorption performance are ascertained. With the presence of melamine, CoNi alloy emerges its autocatalysis effect to generate N-doped CNTs, leading to unique heterostructure and high oxidation stability. The abundant heterogeneous interfaces induce strong interfacial polarization to EMWs and optimize impedance matching characteristic. Combined with the inherent high conductive and magnetic loss capabilities, the nanocomposites accomplish a high-efficiency EMW absorption performance even at a low filling ratio. The minimum reflection loss of −84.0 dB at the thickness of 3.2 mm and a maximum effective bandwidth of 4.3 GHz are obtained, comparable to the best EMW absorbers. Integrated with the facile, controllable, and sustainable preparation approach of the heterogenous nanocomposites, the work shows a great promise of the nanocarbon encapsulation protocol for achieving lightweight, high-performance EMW absorption materials.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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