Issue 34, 2022

Wave-transparent LAS enabling superior bandwidth electromagnetic wave absorption of a 2D pitaya carbon slice

Abstract

Wave-transparent lithium aluminosilicate glass-ceramic (LAS) nanofillers are confirmed to be effective in regulating the electromagnetic parameters to satisfy the impedance matching characteristic and enhance the electromagnetic wave loss ability. Herein, a new pitaya slice hierarchical configuration of a 2D LAS/carbon sheet electromagnetic wave absorber was prepared by an effective protocol using an ammonium nitrate-assisted self-polymerization and in situ blown strategy. The obtained 2D pitaya hierarchical configuration exhibited excellent microwave absorption performance with an RL of −55.26 dB and a wide effective absorption bandwidth (≤-10 dB) of 8.21 GHz, covering the whole Ku-band (12–18 GHz) with a low mass adding of only 9.2 wt%. The absorbing mechanism demonstrated that the interfacial polarization, Debye dipolar relaxation, and well-matched characteristic impedance play important roles in improving the microwave absorption properties of the 2D pitaya slice hierarchical configuration. This paper may provide a new route for constructing an effective absorbing network of 2D pitaya slice hierarchical configuration, realizing ultra-low filling and broadband microwave performance.

Graphical abstract: Wave-transparent LAS enabling superior bandwidth electromagnetic wave absorption of a 2D pitaya carbon slice

Supplementary files

Article information

Article type
Paper
Submitted
13 May 2022
Accepted
25 Jul 2022
First published
15 Aug 2022

J. Mater. Chem. A, 2022,10, 17603-17613

Wave-transparent LAS enabling superior bandwidth electromagnetic wave absorption of a 2D pitaya carbon slice

C. Ding, H. Fu, T. Wu, Y. Li, S. Wu, X. Ren, Z. Gao, K. Guo, L. Xia, G. Wen and X. Huang, J. Mater. Chem. A, 2022, 10, 17603 DOI: 10.1039/D2TA03853F

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