Abstract
Preparing high-performance Co-based absorbers with a facile approach always is a challenge. Herein, a simple method consisting of hydrothermal and reduction carbonization technique has been developed to synthesize Co/C composites. The microwave absorption properties of the Co/C composites with different glucose content were investigated. Convincing experimental results show that the microwave absorption properties of the Co/C composites can be modulated by adjusting the glucose content from 0.5 to 1.5 g. When 1 g of glucose is used, the reflection loss of the Co/C1 composite could reaches −50 dB with the thickness of just 2 mm. In particular, the efficient bandwidth (RL < −10 dB) reaches almost 0.5 GHz within the S-band (2–4 GHz) at the thickness of 5 mm. Considering the low price, facile synthesis and excellent microwave absorption properties, the Co/C composites could be used as promising absorbers.
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Acknowledgements
This work was supported by National Natural Science Foundation of China (No. 51503183) and Zhejiang Provincial Natural Science Foundation of China (No. LQ14E030010).
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Yu, L., Zhu, Y. & Fu, Y. Facile fabrication of sheet-like cobalt/carbon composites for microwave absorption. J Mater Sci: Mater Electron 28, 17202–17207 (2017). https://doi.org/10.1007/s10854-017-7649-0
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DOI: https://doi.org/10.1007/s10854-017-7649-0