Recent Progress in Bimetallic Oxide-Based Electromagnetic Wave Absorbing Materials

doi:10.15541/jim20260243

Abstract

Abstract: To address electromagnetic wave pollution, developing high-performance electromagnetic wave absorbing (EMWA) materials has become an urgent priority. Bimetallic oxides have emerged as a research hot spot in this field due to their tunable electromagnetic properties and excellent environmental stability. In recent years, considerable attention has been paid to the influence of multidimensional structural design. In this work, the progress in bimetallic oxide-based EMWA materials over the past decade was summarized, systematically elucidating the evolutionary patterns—from zero-dimensional nanoparticles and one-dimensional nanowires/tubes to two-dimensional nanosheets and three-dimensional hierarchical structures. Moreover, the unique advantages of different dimensions in optimizing impedance matching and enhancing loss mechanisms were analyzed. A comprehensive comparison showed that interfacial polarization can be enhanced by zero-dimensional materials through core-shell and hollow designs with high specific surface area, abundant surface atoms, and unsaturated bonds. One-dimensional materials utilized shape anisotropy and conductive networks to achieve strong absorption at low filling ratios. Two-dimensional materials relied on large-area heterogeneous interfaces to demonstrate excellent performance at ultra-thin matching thicknesses. Three-dimensional materials, with continuous networks and adjustable porosity, can simultaneously construct continuous conductive pathways and interconnected pores, optimizing the conductive network while extending the electromagnetic wave propagation path, achieving maximized energy dissipation. Studies have demonstrated that dimensional control significantly enhances material wave absorptive properties. Finally, the paper summarizes current challenges and outlines future research directions, aiming to provide valuable guidance for designing next-generation high-performance EMWA materials.

Key words: bimetallic oxide, dimensional engineering, electromagnetic wave absorption, impedance matching, review

CLC Number:

TB34

SUN Lei, XIE Xiu-bo, DU Wei, HOU Chuan-xin. Recent Progress in Bimetallic Oxide-Based Electromagnetic Wave Absorbing Materials[J]. Journal of Inorganic Materials, DOI: 10.15541/jim20260243.

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