Ti<sub>3</sub>C<sub>2</sub> MXenes with Modified Surface for High-Performance Electromagnetic Absorption and Shielding in the X‑Band


Electromagnetic (EM) absorbing and shielding composites with tunable absorbing behaviors based on Ti<sub>3</sub>C<sub>2</sub> MXenes are fabricated via HF etching and annealing treatment. Localized sandwich structure without sacrificing the original layered morphology is realized, which is responsible for the enhancement of EM absorbing capability in the X-band. The composite with 50 wt % annealed MXenes exhibits a minimum reflection loss of −48.4 dB at 11.6 GHz, because of the formation of TiO<sub>2</sub> nanocrystals and amorphous carbon. Moreover, superior shielding effectiveness with high absorption effectiveness is achieved. The total and absorbing shielding effectiveness of Ti<sub>3</sub>C<sub>2</sub> MXenes in a wax matrix with a thickness of only 1 mm reach values of 76.1 and 67.3 dB, while those of annealed Ti<sub>3</sub>C<sub>2</sub> MXenes/wax composites are 32 and 24.2 dB, respectively. Considering the promising performance of Ti<sub>3</sub>C<sub>2</sub> MXenes with the modified surface, this work is expected to open the door for the expanded applications of MXenes family in EM absorbing and shielding fields

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oai:figshare.com:article/3509822Last time updated on 2/12/2018

This paper was published in FigShare.

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