Bioinspired Ultrathin MXene/CNC Composite Film for Electromagnetic Interference Shielding

LIU Zhang-Shuo1 LIU Ji1 DAI Yang1 LI Xiao-Feng1 YU Zhong-Zhen1 ZHANG Hao-Bin1

(1.College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, China 100029)

【Abstract】Electromagnetic interference (EMI) shielding films with excellent mechanical properties are highly promising for applications in flexible devices, automotive electronics, and aerospace. Inspired by the excellent mechanical properties of nacre derived from its micro/nanoscale structure, we prepared high-performance MXene/cellulose nanocrystals (CNC) composite films by simple solution blending and followed vacuum-assisted filtration process. The presence of CNC significantly improves the mechanical properties with tensile strength increasing from 18 MPa to 57 MPa and toughness improving from 70 kJ/m3 to 313 kJ/m3. Meanwhile, the composite film still exhibits high electrical conductivity (up to 104 S/m) and excellent EMI shielding efficiency (over 40 dB) with a small thickness of 8 µm.

【Keywords】 MXene; mechanical property; electromagnetic interference shielding;

【DOI】

【Funds】 National Natural Science Foundation of China (51673015, 51373011, 51533001) Fundamental Research Fund for the Central Universities (BHYC1707B)

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(Translated by PENG ZW)

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This Article

ISSN:1000-324X

CN: 31-1363/TQ

Vol 35, No. 01, Pages 99-104

January 2020

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Article Outline

Abstract

  • 1 Experimental methods
  • 2 Results and discussion
  • 3 Conclusion
  • References