• 文献标题:   Lightweight Cellulose Nanofibril/Reduced Graphene Oxide Aerogels with Unidirectional Pores for Efficient Electromagnetic Interference Shielding
  • 文献类型:   Article
  • 作  者:   LI MM, HAN FY, JIANG S, ZHANG ML, XU QY, ZHU JH, GE AX, LIU LF
  • 作者关键词:   cellulose nanofibril, composite aerogel, electromagnetic interference shielding, graphene, unidirectionally porous structure
  • 出版物名称:   ADVANCED MATERIALS INTERFACES
  • ISSN:   2196-7350
  • 通讯作者地址:  
  • 被引频次:   12
  • DOI:   10.1002/admi.202101437 EA NOV 2021
  • 出版年:   2021

▎ 摘  要

Lightweight and compressible aerogels have been widely considered as promising materials for electromagnetic interference (EMI) shielding. Herein, a lightweight cellulose nanofibril/reduced graphene oxide carbon aerogel fabricated by unidirectional freeze-drying and pyrolysis processes is reported. The results show that the aerogels with unidirectionally aligned pores possess better compression resilience and EMI shielding performance in the radial direction. The unidirectional aerogel with low density (approximate to 0.0058 g cm(-3)) exhibits a high EMI shielding effectiveness (SE) of approximate to 33 dB at 8.2-12.4 GHz and a specific EMI SE of 5759 dB cm(3) g(-1). Therefore, the fabricated aerogel demonstrates a promising potential in the field of next-generation EMI shielding materials.