Issue 35, 2024

Design of a yolk–shell ternary metal sulfide with a tunable structure for high-performance electromagnetic wave absorption

Abstract

Herein, we report a strategy for preparing a novel ternary metal sulfide (TMS) with a yolk–shell structure based on a “penetration–solidification–annealing” method. A series of FeCoNiSxGy with tunable structure, different morphology and composition was synthesized by adjusting the degree of sulfuration. Due to the synergistical manipulation of rich interface, defects, vacancies and electrical conductivity, as well as the unique yolk–shell structure, the appropriate sulfuration strategy achieved excellent impedance-matching and strong dielectric loss. The as-synthesized FeCoNiSxGy sulfides were blended with paraffin wax (under a filler loading of 30 wt%), which had the minimum reflection loss of −49.44 dB (2.20 mm) and the effective absorption bandwidth of 4.76 GHz (1.6 mm). In conclusion, this work could aid the design and regulation of a new type of ternary metal sulfides with high-performance electromagnetic wave absorption.

Graphical abstract: Design of a yolk–shell ternary metal sulfide with a tunable structure for high-performance electromagnetic wave absorption

Supplementary files

Article information

Article type
Paper
Submitted
15 Apr 2024
Accepted
05 Aug 2024
First published
15 Aug 2024

Nanoscale, 2024,16, 16543-16555

Design of a yolk–shell ternary metal sulfide with a tunable structure for high-performance electromagnetic wave absorption

Z. Liu, Y. Zhao and Z. Liu, Nanoscale, 2024, 16, 16543 DOI: 10.1039/D4NR01641F

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