期刊
CERAMICS INTERNATIONAL
卷 47, 期 4, 页码 5747-5757出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2020.10.161
关键词
Ti3C2Tx MXene; Fe3O4@PANI; Electromagnetic interference shielding; Ultrathin film; Sandwich intercalation structure
资金
- Xi'an Science Technology Bureau Innovation Leading Projects [201805037YD15CG21(23)]
- Natural Science Foundation of Shaanxi Province [2019JQ-741]
- China Postdoctoral Science Foundation [2018M643699]
- Postdoctoral Science Foundation of Shaanxi Province [2018BSHEDZZ101]
- Science and Technology Bureau of Beilin District, Xi'an [GX2035]
Ti3C2Tx MXene has been explored as an efficient electromagnetic interference (EMI) shielding material due to its high conductivity, large specific surface area, surface defects, and functional groups. Ti3C2Tx/Fe3O4@PANI composite films with adjustable thickness showed high EMI shielding effectiveness, reaching 62 dB with increased Ti3C2Tx concentration. These ultra-thin films have potential applications in packaging, wearable electronics, and military fields, providing insights for lightweight and advanced electromagnetic shielding materials.
Ti3C2Tx MXene has been explored as an efficient electromagnetic interference (EMI) shielding material because of its high electrical conductivity, large specific surface area, rich surface defects, and abundant functional groups. Herein, core-shell Fe3O4@PANI composites were prepared, followed by the preparation of a flexible and lightweight Ti3C2Tx/Fe3O4@PANI composite film with sandwich intercalation structure by vacuum-assisted filtration, using Ti3C2Tx MXene as a matrix material. The ultrathin composite film with a Ti3C2Tx nanosheets to Fe3O4@PANI weight ratio of 12:5 reached a maximum EMI shielding effectiveness (SE) value of 58.8 dB at a thickness of only 12.1 mu m. This is much higher than the SE of pure conductive Ti(3)C(2)T(x )films of the same thickness. After adjusting the film thickness by increasing the concentration of Ti3C2Tx, an SE of 62 dB was achieved at a thickness of 16.7 mu m. The ultrathin Ti3C2Tx/Fe3O4@PANI films exhibit potential for application in packaging, wearable electronic equipment, and military fields. Moreover, they provide insight into the preparation of lightweight and progressive electromagnetic shielding materials.
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