 This research has developed a new type of lightweight nanostructured aerogel material which can be used as an effective EMI shielding material. This material consists of ultra-thin cellulose nanofibers and transition metal carbide or nitride, emzine, particles. These particles are arranged in a way that allows them to form a structure similar to the nacre of a pearl. This structure provides excellent electrical conductivity and interfacial polarization, resulting in a very strong EMI shielding effectiveness. Additionally, this material is extremely lightweight and has a low density, making it ideal for use in applications where weight and size are important considerations. This article was authored by Zhihui Zeng, Changxian Wang, Gilberto Sikera, and others.