FeCo/Graphene Nanocomposites for Applications as Electromagnetic Wave-Absorbing Materials

• Published in: ACS applied nano materials Vol. 5; no. 12; pp. 18730 - 18741
• Main Authors: Du, Xinchen, Zhang, Luran, Guo, Changjin, Liu, Guoqiang, Yuan, Huifeng, Li, Yong, Hu, Wanbiao
• Format: Journal Article
• Language: English
• Published: American Chemical Society 23-12-2022
• Subjects: FeCo; nanocomposites; one-step solid-phase synthesis; graphene; microwave absorption
• ISSN: 2574-0970; 2574-0970
• DOI: 10.1021/acsanm.2c04497

Simple and efficient preparation high-performance magnetic carbon-based nanocomposites as electromagnetic wave-absorbing materials is a research hotspot. Here, employing a straightforward, ecologically friendly, and effective solid-state technique, FeCo/graphene nanocomposites with good electromagnetic wave absorption capabilities were successfully fabricated without the use of any external carbon sources. m-NaCl powder is combined with Co­(acac)2 and Fe­(acac)3 and then annealed at a particular temperature. During the annealing process, FeCo nanoparticles were synthesized and supported on graphene nanocomposites. Following annealing at 700 °C, the material showed an ideal reflection loss of −71.63 dB at 10.8 GHz, an effective bandwidth of 4.24 GHz, and a thickness of 2.68 mm. The radar cross section (RCS) of FeCo/C-700 is less than −10 dB m2, which provides evidence that the samples have good radar wave attenuation capabilities when the scattering angle is between 0 and 60°. The approach for creating graphene composites with FeCo nanoparticles suggested in this study serves as a crucial source of inspiration for the later development of new magnetic carbon nanocomposite systems.