Pollution from electromagnetic waves has prompted the development of high-performance electromagnetic wave(EMW)absorbers.However,single-component absorption materials cannot meet current performance requirements.Therefore,multi-component composites become the focus of research.Here,CoZn-based metal organic framework(CoZn-ZIF-L)nanosheets are synthesized and transformed into nitrogen-doped carbon-wrapped CoZn nanoparticles(CoZn@NC).Subsequently,a hydrothermal process was used to compound ultrasmall CuS nanoparticles on surface of the CoZn@NC to construct a strong interface coupling structure,effectively combining the dielectric properties of CoZn@NC and CuS.It is experimentally demonstrated that the optimized heterostructure exhibited significantly enhanced EMW absorption capacity,with a reflection loss(RL)of-56.2 dB,a matching thickness of only 1.46 mm,and an effective absorption bandwidth(EAB,RL＜-10 dB)of 3.6 GHz.This work provides an efficient way to design high-performance EMW absorption materials with strong interface coupling.
维普
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