The development of microwave absorption materials with good environmental adaptability is a hot topic in the electromagnetic protection field. In this research, Expanded graphite (EG)/ZIF-67 nanocubes-derived ([email protected]) composites were successfully fabricated by electrostatic assembly and subsequent heat treatment. The results show that the involvement of an appropriate content of [email protected] not only overcomes the problem of single EG impedance mismatch but also introduces additional magnetic loss for the absorber. At the thicknesses of 1.6 mm and 1.5 mm, an effective absorption bandwidth (EAB) of 4.52 GHz and a minimum reflection loss (RLmin) of -48.4 dB were achieved for the Z2-700 sample with a low filling ratio (20 wt%). The enhancement of EMW-absorption performance is attributed to the optimization of impedance matching and the synergistic action between multiple loss mechanisms. Electrochemical corrosion test showed that graphite nanoflakes of EG enhanced the transfer resistance during corrosion, and the corrosion resistance of pure [email protected] was enhanced with the protection of EG. This work provides a reasonable attempt to design and fabricate efficient microwave absorption materials suitable for harsh environments. 

Expanded graphite/Co@C composites with dual functions of corrosion resistance and microwave absorption

Recent advancement of magnetic MOF composites in microwave absorption

Transforming in-situ grown chitosan/ZIF-67 aerogels into 3D N-doped Co/CoO/carbon composites for improved electromagnetic wave absorption

Effect of Al^3+doping on dielectric properties of cobalt ferrite nanoparticle for using in high frequency applications

A. Wang

Papers

In situ-derived carbon nanotubes decorated the surface of CoxNiy@C composites from MOFs for efficient electromagnetic wave absorption

Effects of Sintering Temperature on Structural, Magnetic and Microwave Absorption Properties of Ni0.5zn0.5fe2o4 Ferrites

In Situ-Derived Carbon Nanotube Decorated Surface of Co1-Xnix@C Composites from Mofs for Efficient Electromagnetic Wave Absorption

Duodenal-Jejunal Bypass Restores T1R2-Mediated Glucose Sensing and SGLT1-Regulated Glucose Absorption in Type 2 Diabetes