|Cite this article as:|
|Yuanyuan Zhou, Zhongyi Bai, Xiangyang Yang, Wei Liu, Bingbing Fan, Zhikai Yan, and Xiaoqin Guo, In-situ growth of NiCo bimetal anchored on porous straw-derived biochar composites for the boosted microwave absorption properties, Int. J. Miner. Metall. Mater.,(2022). https://doi.org/10.1007/s12613-022-2496-2|
As people's protection awareness about electromagnetic pollution is gradually increasing, the demand for absorbing materials with renewability and environmental friendliness has attracted widespread attention. In this paper, the straw-derived biochar combined with NiCo alloys composites were successfully fabricated in the process of high temperature carbonization and subsequent hydrothermal reaction. The electromagnetic parameters of porous biocarbon/NiCo composites can be effectively tuned by the NiCo contents. The porous biocarbon/NiCo composites present the improved absorbing performance due to the synergy effect of magnetic-dielectric characteristics. An exceptional reflection loss (RL) is -27.0 dB at 2.2 mm thickness and an effective absorption bandwidth can reach 4.42 GHz (11.71-16.13 GHz). These results demonstrate that the porous biocarbon/NiCo composite could be used as a new generation absorbing material because of low density, light weight, excellent conductivity, and strong absorption characteristics.