@article{Wu2026, 
author = {Tong Wu and Song Bi and Hao Li and Hong-wei Wang and Zhen Wang and Rui Meng and Wei Xiao and Zhi-ling Hou},
title = {Molten salt electrochemical synthesis of Fe@CNTs for broadband microwave absorption},
year = {2026},
journal = {Nano Research},
keywords = {carbon nanotubes, iron-encapsulated, microwave absorbing materials, molten salt, electrolysis},
url = {https://www.sciopen.com/article/10.26599/NR.2026.94909165},
doi = {10.26599/NR.2026.94909165},
abstract = {The rapid development of communication technologies has intensified electromagnetic pollution, creating an urgent demand for high-performance microwave absorbers. Herein, Fe@CNTs composites were synthesized via molten salt electrochemical reduction using CO2 as the carbon source in a Na2CO3–K2CO3–CaCO3 electrolyte. The microstructure, electromagnetic parameters, and microwave absorption performance were systematically investigated. The as-prepared sample exhibits an effective absorption bandwidth of 5.1 GHz at a thin thickness of 1.7 mm, surpassing most reported CNTs-based absorbers. Furthermore, a trapezoidal pyramid metastructure was designed to further broaden the bandwidth; the optimized metastructure achieves full-band absorption covering 2–18 GHz at a total thickness of 16.4 mm, representing a three-fold bandwidth enhancement over the planar configuration. This work provides a green, scalable synthesis route and an effective structural engineering strategy for ultra-broadband microwave absorption .}
}