Ultralight and Mechanically Robust Ti3C2Tx Hybrid Aerogel Reinforced by Carbon Nanotubes for Electromagnetic Interference Shielding
| Autor: | Yury Gogotsi, Meikang Han, Jun-Pyo Hong, Chong Min Koo, Pradeep Sambyal, Aamir Iqbal, Myung Ki Kim, Hyerim Kim, Soon Man Hong |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Aerogel 02 engineering and technology Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Electromagnetic interference 0104 chemical sciences law.invention Nanomaterials EMI law Electrical resistivity and conductivity Electromagnetic shielding General Materials Science Composite material 0210 nano-technology Porosity |
| Zdroj: | ACS Applied Materials & Interfaces. 11:38046-38054 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | Lightweight materials with high electrical conductivity and robust mechanical properties are highly desirable for electromagnetic interference (EMI) shielding in modern portable and highly integrated electronics. Herein, a three-dimensional (3D) porous Ti3C2Tx/carbon nanotube (CNT) hybrid aerogel was fabricated via a bidirectional freezing method for lightweight EMI shielding application. The synergism of the lamellar and porous structure of the MXene/CNT hybrid aerogels contributed extensively to their excellent electrical conductivity (9.43 S cm-1) and superior electromagnetic shielding effectiveness (EMI SE) value of 103.9 dB at 3 mm thickness at the X-band frequency, the latter of which is the best value reported for synthetic porous nanomaterials. The CNT reinforcement in the MXene/CNT hybrid aerogels enhanced the mechanical robustness and increased the compressional modulus by 9661% relative to that of the pristine MXene aerogel. The hybrid aerogel with high electrical conductivity, good mechanical strength, and superior EMI shielding performance is a promising material for inhibiting EMI pollution. |
| Databáze: | OpenAIRE |
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