TY - JOUR
T1 - Lightweight MXene/polyimide aerogel composites for high-performance of electromagnetic wave absorption
AU - Abdul, Waras
AU - Zhao, Xinyi
AU - Liu, Wenbiao
AU - Sun, Yukun
AU - Guo, Jiang
AU - Wu, Wenling
AU - Guo, Zhanhu
AU - Zhu, Jianfeng
PY - 2025/6/1
Y1 - 2025/6/1
N2 - The rise in electromagnetic wave (EMW) pollution demands the advancement of cutting-edge microwave absorption materials to shield both environmental and technological systems. Considering this, a novel non-magnetic, light-weight Ti3C2Tx MXene/Polyimide (MXPI) aerogel composites were synthesized via simple freeze-drying method, where PI functions as an anchor for the MXene layers, preventing their tendency to self-stack and fostering improved interactions between the Ti3C2Tx nanosheets. The MXPI aerogel demonstrated exceptional EMW absorption performance. The MXPI-25 % sample exhibited optimal performance at a thickness of 5.24 mm, achieving an optimum reflection loss (RL) of −64.70 dB at 13.92 GHz, along with an effective absorption bandwidth (EAB) of 1.04 GHz. The principles of microwave absorption in light-weight MXPI aerogels were thoroughly explored from both the chemical composition and physical structure perspectives. The enhanced absorption performance can be primarily attributed to the synergistic effects of conduction loss and multiple polarization relaxation processes. Furthermore, the porous architecture of the aerogel, combined with the incorporation of MXene sheets, facilitates improved impedance matching and more effective attenuation of EMWs. This study provides significant contributions to the field of lightweight and efficient microwave-absorbing materials, with potential applications in reducing EM interference and enhancing radar stealth capabilities.
AB - The rise in electromagnetic wave (EMW) pollution demands the advancement of cutting-edge microwave absorption materials to shield both environmental and technological systems. Considering this, a novel non-magnetic, light-weight Ti3C2Tx MXene/Polyimide (MXPI) aerogel composites were synthesized via simple freeze-drying method, where PI functions as an anchor for the MXene layers, preventing their tendency to self-stack and fostering improved interactions between the Ti3C2Tx nanosheets. The MXPI aerogel demonstrated exceptional EMW absorption performance. The MXPI-25 % sample exhibited optimal performance at a thickness of 5.24 mm, achieving an optimum reflection loss (RL) of −64.70 dB at 13.92 GHz, along with an effective absorption bandwidth (EAB) of 1.04 GHz. The principles of microwave absorption in light-weight MXPI aerogels were thoroughly explored from both the chemical composition and physical structure perspectives. The enhanced absorption performance can be primarily attributed to the synergistic effects of conduction loss and multiple polarization relaxation processes. Furthermore, the porous architecture of the aerogel, combined with the incorporation of MXene sheets, facilitates improved impedance matching and more effective attenuation of EMWs. This study provides significant contributions to the field of lightweight and efficient microwave-absorbing materials, with potential applications in reducing EM interference and enhancing radar stealth capabilities.
KW - Electromagnetic wave absorption
KW - MXene
KW - Polyimide
UR - https://www.scopus.com/pages/publications/105006837916
U2 - 10.1016/j.mtcomm.2025.112942
DO - 10.1016/j.mtcomm.2025.112942
M3 - Article
AN - SCOPUS:105006837916
SN - 2352-4928
VL - 46
SP - 1
EP - 13
JO - Materials Today Communications
JF - Materials Today Communications
M1 - 112942
ER -