摘要
The hierarchical MoS_(2)/CoNi composites were successfully synthesized by a two-step hydrothermal method.The large surface area of the MoS_(2) enhances the dispersivity of the CoNi nanoparticles and the formation of abundant MoS_(2)/CoNi interfaces,which make an important contribution to the dielectric loss,and the introduction of the CoNi improves impedance matching and introduces magnetic loss,which can improve the absorption performance to electromagnetic waves.Through the calculation of the electromagnetic parameters,the minimum reflection loss(RL)value of the MoS_(2)/CoNi composites achieves-41.44 dB at 13.53 GHz under a thickness of 2.0 mm and the corresponding effective absorption bandwidth(RL below-10 dB)is 5.6 GHz.The MoS_(2)/CoNi composite has the potential to be applied to microwave absorption due to its strong absorption and wide bandwidth.
基金
financially supported by the Key Scientific Research Projects of the Southwest University of Science and Technology(No.17zx910201)
the Longshan Academic Talent Research Supporting Program of SWUST(Nos.18LZX437 and 18LZXT09)
the Sichuan Science and Technology Program(No.2017TD0020)
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