期刊
CARBON
卷 181, 期 -, 页码 58-68出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2021.05.022
关键词
MXene; Composite microspheres; Porous material; Ni nanochains; Microwave absorption
资金
- National Natural Science Foundation of China [21975206, 21901206]
In this study, two-dimensional Ti(3)C(2)Tx MXene nanosheets and one-dimensional Ni nanochains were assembled into three-dimensional porous MXene/Ni composite microspheres using ultrasonic spray, showing excellent electromagnetic wave absorption performance and impedance matching.
In this paper, two dimensional Ti(3)C(2)Tx MXene nanosheets and one-dimensional Ni nanochains are successfully assembled into three dimensional porous MXene/Ni composite microspheres by ultrasonic spray. Their unique micro nano structure and well-designed three-dimensional porous interconnection network can significantly improve the stacking of Ti(3)C(2)Tx MXene nanosheets and the agglomeration of magnetic Ni nanochains. By changing the content of Ni nanochains,we can obtain MXene/Ni composite microspheres with different magnetic content. Due to the difference in conductivity between Ti(3)C(2)Tx MXene and Ni, as well as the newly generated hetero interface and abundant surface groups, MXene/Ni composite microspheres show good impedance matching and excellent electromagnetic wave absorption performance. The minimum reflection loss (RLmin) is -52.7 dB@12.8 GHz, and the corresponding matching thickness is only 1.9 mm. The preparation of MXene/Ni composite microspheres provides a simple and effective method for designing other MXene-based composite materials. (C) 2021 Elsevier Ltd. All rights reserved.
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