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Electromagnetic pollution has become an increasingly hot issue due to the rapid development of wireless communications and microwave circuits in the GHz frequency range. Electromagnetic interface (EMI) shielding materials have received more and more attention due to their promising application potential. Aerogel-based composites have low density, large porosity, and high specific surface area for EMI shielding fields. This mini-review article briefly describes the research progress of aerogel-based composites for EMI shielding applications. Four types of aerogel-based composites are reviewed comparably such as carbon-based composites, MXene-based composites, biomass-based composites, and conductive polymer-based composites. The interface or surface between the filler/fiber and matrix favors the increase of EMI value due to its synergistic effect. Moreover, the current problems and future developments of aerogel-based composites are also suggested for EMI shielding applications based on our knowledge. It is expected to provide a reference for improving applications of aerogel-based composites in EMI shielding fields.

Aerogel-based composites for electromagnetic interface shielding applications