One-dimensional well-defined peapod CoxNiy@C nanocomposite hollow nanorod towards enhanced electromagnetic performance
Yan Liang, Jiahang Qiu, Mu Zhang, Xiaodong Li, Xudong Sun, Dianning He, Xiaochen Wang, Hanhui Lei, Terence Xiaoteng Liu, Bowen Liu
TL;DR
This paper introduces a one-dimensional nanocomposite material that shows strong microwave absorption and oxidation resistance, making it suitable for lightweight applications.
Contribution
The study presents a novel one-dimensional CoxNiy@C nanocomposite with enhanced electromagnetic performance and oxidation resistance.
Findings
The one-dimensional structure achieves high absorption efficiency and impedance matching at low filling rates.
The material exhibits a minimum reflection loss of −48.4 dB and an effective absorption width of 4.8 GHz.
The addition of Ni provides oxidation resistance, maintaining performance after heating at 350 ℃ for 12 hours.
Abstract
Microwave absorbing materials (MAMs) not only achieve high electromagnetic absorption, but also have the characteristics of lightweight and oxidation resistance. This is a problem that needs to be solved urgently in some special fields. Therefore, we have done a series of experiments and prepared one-dimensional pea pod-like CoxNiy@C absorbing material. Through the experimental results and previous work, we find that one-dimensional structure has great potential to achieve high absorption efficiency and lightweight, and can achieve good impedance matching at low filling rate, which is attributed to the enhancement of conductivity of one-dimensional structure and the interface polarization caused by core-shell structure, and the one-dimensional structure will further increase the heterogeneous interface area and enhance the interface polarization loss. The minimum reflection loss (RLmin)…
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Taxonomy
TopicsElectromagnetic wave absorption materials · Metamaterials and Metasurfaces Applications · Advanced Antenna and Metasurface Technologies