Citation: Fan Xiaomeng, Li Minghang, Li Xin, Ye Fang, Xue Jimei, Zhang Litong, Cheng Laifei. Electromagnetic interference shielding Ti₃C₂T_x-bonded carbon black films with enhanced absorption performance[J]. Chinese Chemical Letters, ;2020, 31(4): 1026-1029. doi: 10.1016/j.cclet.2020.01.030 shu

Electromagnetic interference shielding Ti₃C₂T_x-bonded carbon black films with enhanced absorption performance

Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an 710072, China

fanxiaomeng@nwpu.edu.cn

Received Date: 12 December 2019
Revised Date: 9 January 2020
Accepted Date: 13 January 2020
Available Online: 13 January 2020

Figures(5)

The demand for flexible and freestanding electromagnetic interference (EMI) shielding materials are more and more urgent to combat with serious electromagnetic (EM) radiation pollution. Twodimensional Ti₃C₂T_x is considered as promising EMI shielding material to graphenes because of the low cost and high electrical conductivity. However, the shielding performance still needs to be optimized to decrease the reflection effectiveness (SE_R) and increase absorption effectiveness (SE_A). Herein, we prepared Ti₃C₂T_x-bonded carbon black films with a porous structure. The SE_R decreased from 20 dB to 12 dB and the SE_A increased from 31 dB to 47 dB. The best EMI shielding effectiveness can be as high as 60 dB with SE_A of 15 dB and SE_R of 45 dB. Their calculated specific shielding effectiveness can be as high as 8718 dB cm²/g. These results indicate that the porous structure can enhance the absorption of the EMI shielding films, resulting from the enhanced scattering and reflection. Consequently, this work provides a promising MXene-based EMI shielding film with lightweight and flexibility.
- Carbon black,
- MXenes,
- Film,
- Electromagnetic interference shielding,
- Flexible
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Electromagnetic interference shielding Ti3C2Tx-bonded carbon black films with enhanced absorption performance

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通讯作者: 陈斌, bchen63@163.com

Electromagnetic interference shielding Ti₃C₂T_x-bonded carbon black films with enhanced absorption performance