期刊
COMPOSITES PART B-ENGINEERING
卷 182, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2019.107613
关键词
Electromagnetic wave absorption; Co/C nanocomposites; Metal-organic framework
资金
- National Natural Science Foundation of China [21875190]
- Natural Science Basic Research Plan in Shaanxi Province of China [2018JC-008]
- Shaanxi Province Key Research and Development Plan for Industry Innovation Chain (Cluster) [2018ZDCXL-GY-09-07]
- Fundamental Research Funds for the Central Universities [3102017jc01001]
In this contribution, the cubic metal-organic framework of [Co(INA)(2)] was designed and synthesized by using a cheap and non-toxic ligand of isonicotinic acid (INA). After pyrolysis at 600-700 degrees C in argon atmosphere, the prismatic Co/C nanocomposites were obtained with cobalt nanoparticles in graphitic carbons. The nanocomposites show favorable impedance matching and extraordinary electromagnetic wave absorption performance from C band to Ku band. The Co/C-650 pyrolyzed at 650 degrees C shows the best electromagnetic wave absorption at a thickness of 2.0 mm, i.e. a minimum reflection coefficient of -47.6 dB and a broad effective absorption bandwidth of 5.11 GHz. The novel prismatic Co/C nanocomposites possess great potential in smart electromagnetic wave absorbing/shielding devices and systems.
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