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Superelastic and Electronic Conductive MXene Aerogels Enable Absorption-Oriented Electromagnetic Interference
Panbo Liu1, Ruina Zhang1, Siyi Wang1
1School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, China.
Small (Weinheim an Der Bergstrasse, Germany)
|August 8, 2026
Summary
Superelastic MXene aerogels with dual hydrogen bonding exhibit remarkable shape recovery and maintain high electromagnetic interference (EMI) shielding effectiveness after repeated compression. This breakthrough offers potential for advanced wearable EMI protection.
Area of Science:
- Materials Science
- Nanotechnology
- Electromagnetics
Background:
- Electronically conductive MXene aerogels are promising for flexible electromagnetic interference (EMI) shielding.
- Achieving superelasticity in MXene aerogels without performance degradation is challenging due to weak van der Waals interactions.
Purpose of the Study:
- To fabricate superelastic and electronically conductive MXene aerogels with enhanced compressibility and EMI shielding.
- To investigate the role of dual hydrogen bonding and structural features in achieving superelasticity and shielding performance.
Main Methods:
- Fabrication of MXene/guar gum/cellulose nanofibers (MGC) aerogels using unidirectional freeze-drying.
- Characterization of structural, mechanical, and electromagnetic shielding properties.
- Evaluation of compressibility, shape recovery, and long-term stability after compression cycles.
Main Results:
- MGC aerogels demonstrated excellent reversible compressibility and maintained structural integrity.
- The MGC-50 aerogel achieved a maximum EMI shielding effectiveness of 40.21 dB with high absorption efficiency (A=0.9998).
- Aerogels retained over 93.4% of initial shielding effectiveness and 92.1% shape recovery after 100 compression cycles.
Conclusions:
- Dual hydrogen bonding interactions are crucial for creating superelastic MXene aerogels.
- The developed MGC aerogels offer a promising platform for wearable EMI protection with robust performance.
- This work provides a foundation for designing advanced aerogels for flexible electronic applications.
