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- Title
Novel Scale‐Like Structures of Graphite/TiC/Ti<sub>3</sub>C<sub>2</sub> Hybrids for Electromagnetic Absorption.
- Authors
Li, Mian; Han, Meikang; Zhou, Jie; Deng, Qihuang; Zhou, Xiaobing; Xue, Jianmin; Du, Shiyu; Yin, Xiaowei; Huang, Qing
- Abstract
Abstract: Electromagnetic (EM) absorbing and shielding materials have attracted great interests due to the increasing electromagnetic pollutions in the past years. Microstructure plays a crucial role in determining the performance of the above materials. Herein, a scale‐like structure based on Ti3C2 Mxenes is proposed to approach improved EM absorption properties. For the first time, graphite/TiC/Ti3AlC2 (G/TiC/Ti3AlC2) hybrids are fabricated in a molten salts bath and graphite/TiC/Ti3C2 (G/TiC/Ti3C2) hybrids are obtained after Al atoms are etched from G/TiC/Ti3AlC2. In G/TiC/Ti3C2, Ti3C2 sheets are perpendicular to the plane of G/TiC, which like a bionic structure of fish scale. The scale‐like G/TiC/Ti3C2 hybrids are dispersed in paraffin matrix to evaluate the EM properties. Owing to the structure‐induced EM absorption mechanism, G/TiC/Ti3C2 show much enhanced EM absorption ability than those materials without structure design, e.g., G/TiC/Ti3AlC2, pure Ti3C2, G/TiC, and the simple mixture of G/TiC with Ti3C2 (G/TiC+Ti3C2). The minimum reflection coefficient (RC) of G/TiC/Ti3C2 with the sample thickness of 2.1 mm reaches −63 dB and the effective absorption bandwidth (the frequency where RC is lower than −10 dB) is more than 3.5 GHz. The results indicate that the scale‐like structure can greatly improve the EM absorption ability.
- Subjects
ELECTROMAGNETIC compatibility; COMPOSITE materials; X-ray diffraction; TITANIUM alloys; CRYSTAL structure
- Publication
Advanced Electronic Materials, 2018, Vol 4, Issue 5, p1
- ISSN
2199-160X
- Publication type
Article
- DOI
10.1002/aelm.201700617