Multi-functional and multi-scenario applications for MXene aerogels with synergistically enhanced asymmetric modules  

作　　者：Junru Yao Jintang Zhou Feng Yang Guiyu Peng Yijie Liu Zhengjun Yao Fan Wu Haibo Zeng 

机构地区：[1]College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 211100,China [2]Key Laboratory of Material Preparation and Protection for Harsh Environment(Nanjing University of Aeronautics and Astronautics),Ministry of Industry and Information Technology,Nanjing 211100,China [3]School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China

出　　处：《Nano Research》2024年第4期3359-3368,共10页纳米研究（英文版）

基　　金：supported by the National Key R&D Program of China(No.2021YFB3502500);the National Natural Science Foundation of China(Nos.52172091 and 52172295);Open Fund of Key Laboratory of Materials Preparation and Protection for Harsh Environment(Nanjing University of Aeronautics and Astronautics);Ministry of Industry and Information Technology(No.56XCA22042).

摘　　要：The development of multifunctional materials and synergistic applications of various functions are important conditions for integrated and miniaturized equipment.Here,we developed asymmetric MXene/aramid nanofibers/polyimides(AMAP)aerogels with different modules using an integrated molding process.Cleverly asymmetric modules(layered MXene/aramid nanofibers section and porous MXene/aramid nanofibers/polyimides section)interactions are beneficial for enhanced performances,resulting in low reflection electromagnetic interference(EMI)shielding(specific shielding effectiveness of 2483(dB·cm^(3))/g and a low R-value of 0.0138),high-efficiency infrared radiation(IR)stealth(ultra-low thermal conductivity of 0.045 W/(m·K)and IR emissivity of 0.32 at 3–5μm and 0.28 at 8–14μm),and excellent thermal management performances of insulated Joule heating.Furthermore,these multifunctional AMAP aerogels are suitable for various application scenarios such as personal and building protection against electromagnetic pollution and cold,as well as military equipment protection against infrared detection and EMI.

关 键 词：multifunctional material electromagnetic interference shielding low reflection infrared radiation stealth thermal insulation Joule heating 

分 类 号：TB30[一般工业技术—材料科学与工程]