Customized heterostructure of transition metal carbides as high-efficiency and anti-corrosion electromagnetic absorbers

Embedded Ni/NiO Heterostructure in MoO3–x Nanorods toward Reinforced Interfacial Polarization for Electromagnetic Wave Absorption

“…Generally, in order to promote EMW absorption efficiency, boosting dielectric dissipation capacities has been considered as a desirable strategy, including conduction loss, interfacial polarization, and dipole polarization. − Among multiple attenuation mechanisms, interfacial polarization stems from the electromagnetic-generated charge migration and redistribution at the heterogeneous interfaces, which can be ascribed to the difference in dielectric properties of the components on either side, leading to the construction of space charge regions. − The oriented electric dipole pairs rotate and stretch under the applied alternating electromagnetic field, thus attenuating the incident electromagnetic energy. − Therefore, constructing heterogeneous interfaces has been considered as a feasible and facile route to optimize dielectric loss and thus improve EMW dissipation performances. Currently, numerous research works about the enhancement of electromagnetic absorption properties by manipulating the interfacial polarization behavior have been reported. − For example, Che et al proposed a heterogeneous interface engineering strategy to prepare bimetal MOFs-derived ZnFe 2 O 4 –ZnO–Fe@C composites through the confined growth method .…”