Bioinspired hollow heterostructure fillers for enhanced electromagnetic interference shielding in polyimide aerogels

Abstract Heterostructure fillers are crucial for enhancing the electromagnetic interference (EMI) shielding performance of composites, and the core lies in the regulation of their morphology. Inspired by the radial structures on marimo surfaces during growth, we propose a bioinspired heterostructure assembly strategy to fabricate novel marimo‐like hollow spherical reduced graphene oxide (hs‐rGO)@nickel‐catalyzed nitrogen‐doped carbon nanotubes (Ni‐NCNTs) and their corresponding polyimide aerogels. Benefiting from the synergistic design of multilevel porous architectures formed by the hollow microspheres in combination with the aerogel matrix, as well as radially aligned Ni‐NCNTs epitaxially grown on hs‐rGO…

• NN
  National Natural Science Foundation of China

  Awards: 52403112, 52203100
• NS
  Natural Science Foundation of Chongqing

  Award: 2023NSCQ‐MSX2682
• FR
  Fundamental Research Funds for the Central Universities

  Award: D5000240062