Abstract
Multicomponent design based on magnetic carbon nanofibers (CNFs) composite is an expected approach to achieve excellent microwave absorption. Herein, the Co/attapulgite (ATP)/CNFs were prepared via electrospinning and vacuum calcination. The structure and electromagnetic (EM) properties of Co/ATP/CNFs impacted by the structure evolution of ATP at different calcination temperatures was investigated. At the calcination temperature of 550 °C, the optimal reflection loss (RL) reached −46.67 dB at 15.76 GHz in 2.5 mm thickness, and the effective absorbing bandwidth (EAB) reached 6.72 GHz at 3.0 mm thickness. ATP is introduced into Co/CNFs to construct the magnetic CNFs with various interfaces and bending structures, thereby enhancing dielectric loss and improving impedance matching, and finally realizing broadband absorption. This work presents a promising mentality to obtain environmental protection and efficient microwave absorbing materials (MAs).
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