One‐Hour Ambient‐Pressure‐Dried, Scalable, Stretchable MXene/Polyurea Aerogel Enables Synergistic Defense Against High‐Frequency Mechanical Shock and Electromagnetic Waves

Abstract The rapid, energy‐efficient, scalable preparation of high‐strength, flexible, multifunctional nanostructured aerogels is highly desired yet challenging. Here, an ambient‐pressure‐dried (APD) strategy is developed involving self‐foaming, dip‐coating, and graphene oxide (GO)‐assisted multiple cross‐linking treatments for the prompt, large‐area preparation of polyurea/transition metal carbides/nitrides (MXenes) aerogels. The APD MXene‐based aerogels showcase low density, remarkable mechanical strength, and ultraflexiblity involving stretchability, good conductivity, hydrophobicity, and high resistance to various solvents. Synergies of robust, elastic cell walls and porous structure contribute to…

• SU
  Shandong University

  Awards: 2021ZLGX01, 31370089963141, 31370082163127
• NN
  National Natural Science Foundation of China

  Awards: 22205131, 22375115
• NS
  Natural Science Foundation of Shandong Province

  Awards: 2022HYYQ-014, 2021ZLGX01, 2022HYYQ‐014
• NK
  National Key Research and Development Program of China

  Award: 2021YFB3502500