Electromagnetic interference shielding using biomass-derived carbon materials

The growing concern over electromagnetic radiation (EMR) emitted by electronic devices has raised awareness of its adverse effects on human health and electronic operations, thus increasing interest in electromagnetic interference (EMI) shielding. Biomass-derived carbon materials (BCMs) provide effective and environmentally friendly solutions to address EMI-related issues. This review investigates the impressive EMI shielding efficiency achieved by various BCMs, that used in polymer composites, 3-D carbonaceous foams/aerogels, and building structural composites. The review outlines the primary mechanism of EMI shielding, the calculation of EMI shielding efficiency, and briefly discusses factors influencing shielding efficiency and production methods of BCMs based EMI shielding composites. It also evaluates the EMI shielding performance of biomass-derived carbon-based foams and aerogels. Finally, a concise overview of the future prospects for biomass-derived carbon EMI shield materials is presented.