CoNi-MoS2 composites with high microwave absorption performance

Composites consisting of magnetic CoNi particles and flower MoS2 (CoNi-MoS2) have been prepared, by using a hydrothermal reaction method, for microwave absorption. When the CoNi-MoS2 molar ratio is 1:1, optimal absorption performance is achieved, with reflection loss of −60.93 dB at 5.68 GHz, while the thickness is 4.93 mm. The outstanding microwave absorption performance is attributed to the synergy of the magnetic and dielectric losses, which greatly improves the impedance matching and increases the decay constants of the materials.