 This study presents a novel approach to fabricate a three-dimensional, 3D, double-layer conductive network based on cellulose aerogel at reduced graphene oxide, CA at RGO, as EMI shielding material. The CA at RGO has excellent EMI shielding effectiveness, EMISE, thermal stability, and thermal conductivity coefficient. This work provides a promising method for developing lightweight, flexible EMI shielding composites. This article was authored by Ping Song, Be Lu, Cha Wiliang, and others.