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Nitrogen-Rich Azolate Framework-Derived Porous Carbon Nanocomposite Hydrogels Shielding Material with Tunable Dynamic
Yifan Kang1, Miao Ma1, Jiacheng Ma1
1Flexible Energy storage and Interfacial Chemistry Key Laboratory of Shaanxi University, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China.
Advanced Materials (Deerfield Beach, Fla.)
|October 28, 2025
Summary
A novel nanocomposite hydrogel offers superior electromagnetic interference (EMI) shielding for electronics. This advanced material overcomes freezing and fragility issues, maintaining performance in extreme conditions.
Area of Science:
- Materials Science
- Nanotechnology
- Polymer Science
Background:
- Conductive hydrogels show promise for electromagnetic interference (EMI) shielding in flexible electronics.
- Challenges include low-temperature freezing, mechanical fragility, and compromised conductivity in organohydrogels.
Purpose of the Study:
- To engineer a multifunctional nanocomposite hydrogel with enhanced anti-freezing, mechanical robustness, and conductivity for EMI shielding.
- To investigate the material's performance under harsh conditions and its self-healing capabilities.
Main Methods:
- Incorporation of nitrogen-rich azolate framework-derived porous carbon (Fe@C/TPS) into a hydrogel matrix.
- Utilized a binary water-ethylene glycol solvent system.
- Characterized EMI shielding effectiveness, strain response, and self-healing behavior.
Main Results:
- Achieved outstanding EMI shielding effectiveness of 56.97 dB in the X-band.
- Demonstrated rapid strain response (200 ms) and high gauge factor (4.7).
- Maintained stable performance at -20 °C and 60% tensile strain, with over 92% recovery of shielding efficiency after self-healing.
Conclusions:
- The Fe@C/TPS nanocomposite hydrogel effectively enhances ionic conductivity and mechanical robustness.
- The material exhibits excellent anti-freezing properties and stable EMI shielding and sensing under extreme conditions.
- Dynamic hydrogen-bonding interactions enable significant self-healing capabilities, improving material durability.
Keywords:
dynamic bondingelectromagnetic interference shieldingmultifunctional hydrogelsself‐healing materialswearable electronicMore Related Videos
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