Issue

Vol. 13 (2021)

Construction of 1D Heterostructure NiCo@C/ZnO Nanorod with Enhanced Microwave Absorption

https://doi.org/10.1007/s40820-021-00704-5
Jianwei Wang
State Key Laboratory of Bio‑Fibers and Eco‑Textiles, Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, People’s Republic of China
Zirui Jia
State Key Laboratory of Bio‑Fibers and Eco‑Textiles, Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, People’s Republic of China
Xuehua Liu
State Key Laboratory of Bio‑Fibers and Eco‑Textiles, Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, People’s Republic of China
Jinlei Dou
State Key Laboratory of Bio‑Fibers and Eco‑Textiles, Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, People’s Republic of China
Binghui Xu
State Key Laboratory of Bio‑Fibers and Eco‑Textiles, Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, People’s Republic of China
Bingbing Wang
State Key Laboratory of Bio‑Fibers and Eco‑Textiles, Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, People’s Republic of China
Guanglei Wu
State Key Laboratory of Bio‑Fibers and Eco‑Textiles, Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, People’s Republic of China

Corresponding Author: Guanglei Wu

wuguanglei@qdu.edu.cn

Nano-Micro Letters, Vol. 13 (2021), Article Number: 175

Abstract

Layered double hydroxides (LDHs) have a special structure and atom composition, which are expected to be an excellent electromagnetic wave (EMW) absorber. However, it is still a problem that obtaining excellent EMW-absorbing materials from LDHs. Herein, we designed heterostructure NiCo-LDHs@ZnO nanorod and then subsequent heat treating to derive NiCo@C/ZnO composites. Finally, with the synergy of excellent dielectric loss and magnetic loss, an outstanding absorption performance could be achieved with the reflection loss of − 60.97 dB at the matching thickness of 2.3 mm, and the widest absorption bandwidth of 6.08 GHz was realized at 2.0 mm. Moreover, this research work provides a reference for the development and utilization of LDHs materials in the field of microwave absorption materials and can also provide ideas for the design of layered structural absorbers.


Highlights:


1 NiCo-LDHs successfully grow in situ on rod-like ZnO with unique structures.
2 The interface of NiCo@C and rod-like ZnO result in interfacial polarization.
3 The RLmin of NiCo@C/ZnO reaches − 60.97 dB with the EABmax of 6.08 GHz.
4 The excellent performance comes from the effect of dielectric loss and magnetic loss.

Keywords

Layered double hydroxides NiCo@C/ZnO Interface polarization Microwave absorption
Wang, Jianwei, Zirui Jia, Xuehua Liu, Jinlei Dou, Binghui Xu, Bingbing Wang, and Guanglei Wu. 2021. “Construction of 1D Heterostructure NiCo@C/ZnO Nanorod With Enhanced Microwave Absorption”. Nano-Micro Letters 13 (August):175. https://doi.org/10.1007/s40820-021-00704-5.
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