期刊
CHEMICAL ENGINEERING JOURNAL
卷 414, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.128875
关键词
Ti3C2Tx; Co9S8; Electromagnetic absorption performance; Multilayer structure; Interfacial polarization
资金
- National Natural Science Foundation of China [51407134, 51801001]
- Natural Science Foundation of Shandong Province [ZR2019YQ24]
- Taishan Scholars and young experts program of Shandong Province, China Postdoctoral Science Foundation [2016 M590619, 2016 M601878]
- Qingchuang Talents Induction Program of Shandong Higher Education Institution (Research and Innovation Team of Structural-Functional Polymer Composites)
- Thousand Talents Plan
- World-Class University and Discipline
- Taishan Scholar's Advantageous and Distinctive Discipline Program of Shandong Province
- World-Class Discipline Program of Shandong Province
The research successfully fabricated a multilayer structure Co9S8/C/Ti(3)C(2)Tx hybrid material, demonstrating impressive electromagnetic absorption performance. It shows a maximum reflection loss of -50.07 dB at 7.6 GHz under a matching thickness of 2.51 mm, with an effective absorption bandwidth (RL <= -10 dB) covering 4.24 GHz.
Owing to their unique structure and high dielectric loss, two-dimensional transition metal carbides and nitrides (MXenes) are widely used in electromagnetic wave absorption. The novel Co9S8/C/Ti(3)C(2)Tx hybrid material with a multilayer structure was successfully fabricated by hydrothermal and annealing processes. The unique multilayered hybrid material is assembled from Ti3C2Tx film layers, Co9S8 particles, and carbon flakes. The Co9S8 particles were uniformly anchored on Ti3C2Tx and carbon flakes. The Co9S8/C/Ti3C2Tx-100 hybrid material has demonstrated impressive electromagnetic absorption performance after the multi-component introduction and interface design were optimized. Besides, the hybrid material exhibits the maximum reflection loss of -50.07 dB at 7.6 GHz under a matched thickness of 2.51 mm, and the effective absorption bandwidth (RL <= -10 dB) is covered 4.24 GHz. The synergistic effect of dielectric and magnetic loss, interfacial polarization, and multilayer structure was beneficial to the improvement of electromagnetic wave absorption performance. This research provides a simple demonstration of the design and synthesis of high-performance MXenes-based absorbing materials.
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