Investigation on Microwave Absorption Properties of RGO-Co Composites

Abstract

In this work, reduced graphene oxide (RGO)-Co composites were prepared by a facile hydrothermal method. The phase, morphology, structure of the composites were analyzed by the scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectrometer (FT-IR). The electromagnetic wave absorption properties of the as-prepared composites were by the vector network analyzer. For the RGO-Co composites, the minimum reflection loss (RLmin) is -30.5 dB at 16.0 GHz and the corresponding thickness is 7 mm. The results show that the RGO-Co composites may be a promising microwave absorber with the characteristics of the low density, strong-absorption, wide-band and thin-thickness.