MXenes as a Promising Material for Electromagnetic Interference Shielding

Electronic information technology has started a huge technological change, resulting in a qualitative improvement in society. However, electromagnetic pollution severely influenced the military, information, biology, and aerospace sectors, including human productivity and quality of life. Exploiting electromagnetic interference (EMI) shielding materials has been becoming crucial to solving this problem. MXenes refer to two-dimensional (2D) transition metal carbides, nitrides, and carbonitrides, which stand out among 2D nanomaterials because of their excellent electrical conductivity, unique sheet morphology, lightweight, flexibility, tunable surface chemistry, and easy solution processability, thus opening the market as EMI shielding materials. However, there is still much-improved room for MXene-based EMI shielding materials in current development. Moreover, to conform to the trend of “intelligent era”, multifunctionalities are more required for MXene-based EMI shielding materials. Great efforts have been made to investigate their functional applications. Herein, starting from the EMI shielding mechanism, then the effect of different types of MXene-based EMI shielding materials, which are classified as film, hydrogel, aerogel, foam, and sponge, on the shielding performance, and the corresponding shielding mechanism are discussed. The concluding section presents perspectives and opportunities for future advancements in EMI shielding materials based on MXene. This comprehensive analysis is expected to facilitate the further progress of MXene-based materials in the domain of electromagnetic interference shielding.