Electromagnetic interference shielding Ti_3C_2T_x-bonded carbon black films with enhanced absorption performance |
| |
| Institution: | 1. Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi’an 710072, China;2. Institut für Materialwissenschaft, Technische Universität Darmstadt, D-64287 Darmstadt, Germany;1. Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China;2. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States;1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China;2. School of Information Engineering, Minzu University of China, Beijing, 100081, China;1. College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, China;2. Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China |
| |
| Abstract: | 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 Ti_3C_2T_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(SEA).Herein,we prepared Ti_3C_2T_x-bonded carbon black films with a porous structure.The SE_R decreased from 20 dB to12 dB and the SEA increased from 31 dB to 47 dB.The best EMI shielding effectiveness can be as high as60 dB with SE_A of 15 dB and SE_R of45 dB.Their calculated specific shielding effectiveness can be as high as8718 dB cm~2/g.These results indicate that the porous structure can enhance the absorption of the EMI shielding films,resulting from the enhanced scattering and reflectio n.Conseque ntly,this work provides a promising MXene-based EMI shielding film with lightweight and flexibility. |
| |
| Keywords: | Carbon black MXenes Film Electromagnetic interference shielding Flexible |
| 本文献已被 CNKI 维普 ScienceDirect 等数据库收录！ |
|
