Novel Scale‐Like Structures of Graphite/TiC/Ti<sub>3</sub>C<sub>2</sub> Hybrids for Electromagnetic Absorption

Advanced Electronic Materials - Tập 4 Số 5 - 2018
Mian Li1,2, Meikang Han3, Jie Zhou1, Qihuang Deng1, Xiaobing Zhou1, Jianming Xue4, Shiyu Du1, Xiaowei Yin3, Qing Huang1
1Engineering Laboratory of Nuclear Energy Materials, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China
2University of Chinese Academy of Sciences, 19A Yuquan Rd, Shijingshan District, Beijing 10049, China
3Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, West Youyi Rd., No. 127, Xi'an, Shaanxi, 710072, China
4State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, P. R. China

Tóm tắt

AbstractElectromagnetic (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.

Từ khóa


Tài liệu tham khảo

10.1016/j.pmatsci.2017.02.005

10.1002/adma.201400108

10.1039/C5TC01354B

10.1039/c3nr06717c

10.1126/science.aag2421

10.1021/acsami.6b06455

10.1021/acsami.7b04602

10.1016/j.carbon.2009.10.028

10.1016/j.carbon.2013.07.110

10.1016/j.carbon.2008.12.038

10.1002/adma.201503149

10.1039/C4NR03040K

10.1002/adma.201403735

10.1002/adma.201303088

10.1016/j.carbon.2016.09.066

10.1111/jace.12321

10.1021/am900893d

10.1039/C4TA03033H

10.1021/acsami.7b00951

10.1021/nn901341r

10.1021/nn102206n

10.1002/adma.201102306

10.1002/jrs.3036

10.1103/PhysRevB.17.1546

10.1039/C4CC01646G

10.1021/acs.jpcc.7b08180

10.1016/S0022-3697(00)00268-7

10.1002/adma.200304485

10.1021/jp912178q

10.1039/c2jm34273a

10.1103/PhysRevB.12.5465

10.1038/natrevmats.2016.98

10.1021/cr3000626

10.1039/C6TC02006B

10.1021/jp905127t

Thông tin
Thông tin xuất bản

Advanced Electronic Materials

Tập 4 Số 5

Thông tin tác giả