Dear Colleagues,

Microwave absorption is evolving as an advanced strategy for electromagnetic (EM) pollution precaution, because its offers a sustainable pathway to fundamentally eliminate EM waves through energy dissipation. Microwave absorbing materials (MAMs), as the platform for energy conversion, have been undoubtedly receiving much attention in the past two decades. Actually, there have been almost 9000 published papers on the fabrication of MAMs since 2016. Among all kinds of MAMs, carbon materials always reside at the frontier of this field, due to their unique advantages in low density, chemical stability, tailorable dielectric property, good processability, and diverse forms. However, pristine carbon materials, such as graphite and carbon nanotubes, cannot produce desirable microwave absorption performance, and thus numerous efforts have been devoted to microstructure design and composition optimization in order to endow them with both excellent impedance matching and powerful intrinsic loss capability. To date, some characteristic internal configurations, such as porous, hollow, core-shell, yolk-shell, sandwich-like, multi-chamber, and foam-like microstructures, have demonstrated their positive effects on the microwave absorption of carbon materials. As compared with microstructure design, most studies focus on the rational construction of carbon-based composites, where magnetic ferrites, magnetic metals, metal oxides/sulfides, conductive polymers, and carbides are all utilized to combine with different carbon materials. Although some significant achievements have been made in these studies, a gap to their practical applications still remains, especially in broadband response and low-frequency absorption. This Special Issue aims to summarize the latest developments in carbon-based MAMs, including both high-performance carbon materials and carbon-based composites, and welcomes contributions to materials synthesis, advanced characterization, excellent performance, and the structure–activity relationship.

Prof. Dr. Yunchen Du
Prof. Dr. Panbo Liu
Prof. Dr. Guizhen Wang
Guest Editors

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• microwave absorbing materials
• carbon-based composites
• dielectric loss
• magnetic loss
• microstructure design
• composition optimization
• reflection loss
• absorption mechanism