Initiating VB-Group Laminated NbS2 Electromagnetic Wave Absorber toward Superior Absorption Bandwidth as Large as 6.48 GHz through Phase Engineering Modulation

Huibin Zhang, Junye Cheng, Honghan Wang, Zehao Huang, Qingbin Zheng, Guangping Zheng, Deqing Zhang, Renchao Che, Maosheng Cao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

44 Citations (Scopus)

Abstract

VB-Group transition metal disulfides (TMDs) are considered excellent materials for electromagnetic wave (EMW) absorption because of their good conductivity and abundant active sites located at their edges and substrates, as compared with VIB-Group TMDs. Herein, for the first time, EMW absorbers based on VB-Group NbS2 nanosheets by using a facile one-step solvothermal method are successfully prepared. The minimum reflection loss (RLmin) can reach up to 43.85 dB with an effective absorption bandwidth of 6.48 GHz (11.52–18.00 GHz). The remarkable EMW absorption performance can also be reflected in the tunable frequency bands (C-, X-, and Ku-bands), which is achieved by adjusting the contents of materials. Furthermore, the influence of the content of 2H-phase and 1T-phase in NbS2 on the EMW absorption performance is systematically investigated. The hierarchical hollow-sphere structure of NbS2 promotes dielectric loss and the multiple reflection and absorption of EMW, and enhances the impedance matching and synergistic attenuation ability. This work demonstrates that the bottleneck of effective absorbing frequency band of single-component dielectric EMW absorbing materials could be broken through, and paves a novel path towards developing broadband absorbing materials in EMW absorption.

Original languageEnglish
Article number2108194
JournalAdvanced Functional Materials
Volume32
Issue number6
DOIs
Publication statusPublished - 2 Feb 2022

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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