Robust Ti3C2Tx MXene foam modified with natural antioxidants for long-term effective electromagnetic interference shielding

Guohong Wang; Minghang Li; Jianxi Liu; Fang Ye; Laifei Cheng; Xiaomeng Fan; Xingmin Liu; Ralf Riedel

doi:10.1016/j.isci.2023.107176

Robust Ti₃C₂T_x MXene foam modified with natural antioxidants for long-term effective electromagnetic interference shielding

iScience. 2023 Jun 19;26(11):107176. doi: 10.1016/j.isci.2023.107176. eCollection 2023 Nov 17.

Authors

Guohong Wang¹, Minghang Li², Jianxi Liu¹, Fang Ye², Laifei Cheng², Xiaomeng Fan², Xingmin Liu¹, Ralf Riedel³

Affiliations

¹ State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, 710072 Xi'an, China.
² Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, 710072 Xi'an, China.
³ Institute of Materials Science, Technische Universität Darmstadt, Alarich-Weiss-Str. 2, 64287 Darmstadt, Germany.

Abstract

MXenes have been proven to be outstanding lossy phase of advanced electromagnetic interference (EMI) shielding materials. However, their poor tolerance to oxygen and water results in fast degradation of the pristine two-dimensional (2D) nanostructure and fading of the functional performance. Herein, in this research, natural antioxidants (e.g., melatonin, tea polyphenols, and phytic acid) were employed to protect the Ti₃C₂T_x MXene from its degradation in order to achieve a long-term stability of the EMI shielding performance. The results showed that the synthesized composites comprised of antioxidants and Ti₃C₂T_x exhibited a decelerating degradation rate resulting in an improved EMI shielding effective (SE) stability. The antioxidation mechanism of the applied antioxidants is discussed with respect to the nanostructure evolution of the Ti₃C₂T_x MXene. This work contributes to the basic foundations for the further development of advanced MXenes for stable applications in the EM field.

Keywords: Electromagnetic field; Electromagnetics; Materials property.