Hierarchical Interface-Engineered Magnetic Graphene–SiCN Aerogels for Low-Frequency and Broadband Microwave Absorption (IMAGE)

Tsinghua University Press

Hierarchical Interface-Engineered Magnetic Graphene–SiCN Aerogels for Low-Frequency and Broadband Microwave Absorption

Caption

Hierarchical magnetic graphene–SiCN aerogels were constructed via a stepwise confinement strategy, in which ZIF-derived magnetic nanoparticles and a polysilazane-derived SiCN ceramic layer were successively confined onto graphene scaffolds. This unique architecture enables the formation of abundant heterogeneous interfaces and continuous conductive networks, leading to enhanced dielectric/magnetic loss and impedance matching.

Benefiting from multiscale interfacial polarization, conduction loss and magnetic resonance, the hybrids exhibit outstanding low-frequency and broadband microwave absorption performance, demonstrating promising potential for next-generation lightweight EMW absorbing applications.

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Journal of Advanced Ceramics, Tsinghua University Press

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