Multi-Functional Nano-Layered Renewable Carbon for Electromagnetic Interference and Energy Devices

Abstract Controlled carbonization of biomass leads to nano-layered graphitic structures with characteristic crystalline sp2 hybridization, conductive properties up to 600 S/m, and electromagnetic interference shielding effectiveness of 47.7 dB at 12 GHz. We investigate functional properties of nano-layered renewable carbon, including conductive and photoluminescent features, leading to a new understanding of structure property correlation and their graphitic multi-layered nano structures. Some unique and novel behaviors, such as negative dielectric factors, hold promise in the areas of co-factor sensors and electromagnetic interference shielding, due to their correlation with absorption of microwave radiation. An electromagnetic interference device demonstrates an application of these nano-graphitic carbon materials. These conductive and photoluminescent carbon materials hold significant promise in applications such as power electronics, batteries, and sensors, where they may replace conventional metal and graphene.