Fabrication of NiO/NiCo₂O₄ Mixtures as Excellent Microwave Absorbers.

ABSTRACT: The NiO/NiCo₂O₄ mixtures with unique yolk-shell structure were synthesized by a simple hydrothermal route and subsequent thermal treatment. The elemental distribution, composition, and microstructure of the samples were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and scanning electron microscope (SEM), respectively. The microwave absorption property was investigated by using vector network analysis (VNA). The results indicated that the excellent electromagnetic wave absorption property of the NiO/NiCo₂O₄ mixtures was achieved due to the unique yolk-shell structure. In detail, the maximum reflection loss (RL) value of the sample reached up to - 37.0 dB at 12.2 GHz and the absorption bandwidth with RL below - 1

SUBMITTER: Cheng X 

PROVIDER: S-EPMC6505032 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature