Improved electromagnetic wave absorbing in high-entropy few-layered MXene
Abstract
Two-dimensional high-entropy (HE) MXenes are expected to be excellent electromagnetic wave absorbing (EWA) materials due to the good conductivity, surface functional groups, inherent defects/disorders, abundant dipoles, and large specific surface area. Here, we report the synthesis and EWA properties of HE few-layered (Ti1/5V1/5Nb1/5Cr1/5Mo1/5)4C3Tx MXene (HE-F-MXene), which demonstrated an optimal effective absorption bandwidth of 3.36 GHz (12.8–16.16 GHz, thickness of 1.3 mm) and a minimum reflection loss (RLmin) of −48 dB (12.48 GHz, thickness of 1.5 mm). The improved EWA performance is attributed to the synergistic effects of optimized impedance matching, balanced conduction loss, enhanced multiple polarization losses, and more adequate multiple reflections and scattering, collectively enabled by the HE effect, low-dimensional architecture, and the high-conductivity framework inherited from the HE-MAX precursor. This work will provide an efficient strategy for improving the EWA performance of MXenes through HE and low-dimensional engineering.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (8)
J. B. Shen
Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences 1 , Hefei 230031,
S. Lin
G. C. Zhao
Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences 1 , Hefei 230031,
M. Zhang
Q. C. Liu
Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, School of Physics and Electronic Information, Anhui Province Industrial Generic Technology Research Center for Alumics Materials, Huaibei Normal University 5 , Huaibei 235000,
W. H. Song
Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences 1 , Hefei 230031,
X. B. Zhu
Institute of Modern Physics, Chinese Academy of Sciences 1 , Lanzhou 730000,
Y. P. Sun
Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences 1 , Hefei 230031,