Preparation of two-dimensional titanium carbide (Ti3C2Tx) and NiCo2O4 composites to achieve excellent microwave absorption properties

The appearance and development of two-dimensional titanium carbide materials provide a new idea for our research on microwave absorption materials. Its excellent electrical conductivity and surface functional groups allow it to be used as a microwave absorber. In this study, Ti3C2Tx@NiCo2O4 composites were prepared by simple hydrothermal method and subsequent annealing process. With the change of annealing temperature, the state of composites is changed, so the structure and properties of samples are further adjusted. When the annealing temperature is 350 °C, an optimal reflection loss value of −50.96 dB can be obtained at 2.18 mm. The excellent microwave absorption performance is not only caused by polarization behavior, but also related to multiple reflections and multiple scattering produced by unique structures. Therefore, the prepared Ti3C2Tx@NiCo2O4 is expected to be a promising microwave absorber with thin thickness and high absorption intensity.