Synergetic dielectric loss and magnetic loss towards superior microwave absorption through hybridization of few-layer WS2 nanosheets with NiO nanoparticles

Deqing Zhang, Yingfei Xiong, Junye Cheng, Jixing Chai, Tingting Liu, Xuewei Ba, Sana Ullah, Guangping Zheng, Ming Yan, Maosheng Cao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

34 Citations (Scopus)

Abstract

WS2 nanomaterials have attracted great attention in the field of electromagnetic wave absorption due to their high specific surface area, layered structure, and peculiar electronic properties. However, further improvements on their limited electromagnetic absorbing (EMA) capacity and bandwidth are urgently required for their practical application as EMA absorbents. In this work, WS2/NiO hybrids with heterostructures are prepared by a hydrothermal method and developed into EMA absorbents. The maximum reflection loss of the hybrids with 20% NiO loading could reach −53.31 dB at a thickness of 4.30 mm; the bandwidth with a reflection loss value of less than −10 dB is determined to be 13.46 GHz (4.54–18 GHz) when the thickness of the absorbent is between 3.5 and 5.5 mm. It is found that the enhanced EMA performance of WS2/NiO hybrids is caused by the addition of magnetic NiO, which could result in the interfaces between WS2 and NiO being responsible for the synergetic magnetic loss and dielectric loss in the hybrids. This work provides a new approach for the design of excellent EMA materials for practical applications.

Original languageEnglish
Pages (from-to)138-146
Number of pages9
JournalScience Bulletin
Volume65
Issue number2
DOIs
Publication statusPublished - 30 Jan 2020

Keywords

  • 2D nanosheets
  • Hetero-structures
  • Microwave absorption
  • WS/NiO hybrids

ASJC Scopus subject areas

  • General

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