Assembling 3D flower-like Co3O4-MWCNT architecture for optimizing low-frequency microwave absorption

By Jincheng Shu, Xiao-Yuan Huang, M. Cao. 2020

162 citations recorded by the source corpus.

Abstract Effectively absorbing and converting electromagnetic (EM) energy for reutilization has an important implication in the fields of energy and environment. Herein, multi-walled carbon nanotubes (MWCNTs) are confinedly implanted into flower-like cobaltosic oxide (Co3O4) to tailor the conductive network and polarization genes. It controllably tunes the EM property and optimizes the low-frequency microwave absorption. The minimum reflection loss reaches -61.4 dB at 3.44 GHz. A novel self-powered device is constructed to achieve the effective conversion from waste EM energy to useful electric energy. Energy conversion process inside flower-like Co3O4-MWCNT architecture is investigated, and the contribution of dielectric loss and magnetic loss to energy conversion is exhibited. This work provides a promising approach in combating EM pollution and alleviating energy problem.

Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/414482c6f7c09d2a5bcbd8d6ab7f87ef946a2909