Journal
ACS APPLIED ELECTRONIC MATERIALS
Volume 1, Issue 12, Pages 2541-+Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaelm.9b00565
Keywords
microwave absorption; hierarchically porous structure; dual loss components; magnetic composite; lyophilization
Funding
- National Natural Science Foundation of China [51373143, 21674087]
Ask authors/readers for more resources
The.hierarchically porous Co/C foam with low density has been successfully prepared by a facile sequential process of foamirig Iyophilization carbonilation. In the hierarchical structure, the macro- and mesoscopic pores are created by surfactant-assisted foaming and lyophilization processes, while the nanoscale pores spring from the etching reaction between gelatin -derived carbon and metal oxides during the high -temperature carbonization. By adjustment of the carbonization temperature and loading of the as -prepared absorbent, a maximum reflection loss (RL) achieves 56.5 dB at the thickness of 2.49 mm, and a broad effective absorption bandwidth (EAB) of 6.0 GHz is reached. The corresponding mechanism demonstrates that such an outstanding performance is rooted in the synergetic loss capacities from dielectric and magnetic components. Therefore, it is believed that this work provides a significant guidance for exploring high-performance and lightweight microwave absorbents.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available