
Advanced Science, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 17, 2024
The rational design of microwave absorption (MA) material featuring light weight, wide bandwidth, and infrared stealth property is crucial for military health protection but remains challenging. Herein, an innovative N-doped carbon nanocage-in-microcage structure with tunable carbon-coated Ni (NC/Ni(HS)) reported via a reliable Ni-catalyzed Ni-templated method. hierarchically hollow composites can optimize the impedance matching respond to multiple reflections scattering incident microwaves waves. Moreover, magnetic nanoparticles improve synergistic interactions between confined heterointerfaces promote interfacial polarization. Such ingenious endows NC/Ni(HS) outstanding MA performance properties. Specifically, NC/Ni(HS)-10 optimal dielectric property, exhibits excellent performance. At ultralow fill loading 4 wt.%, bandwidth 6.16 GHz achieved at thickness 2.63 mm, strong reflection loss -63.67 dB obtained 2.00 mm. In addition, shows low emissivity in range 3‒14 µm, which key compatibility stealth. This work paves way advanced materials that meet requirements multispectral-compatible
Language: Английский