• 文献标题:   Atomically Dispersed Ni Single-Atoms Anchored on N-Doped Graphene Aerogels for Highly Efficient Electromagnetic Wave Absorption
  • 文献类型:   Article
  • 作  者:   SUO B, ZHANG X, JIANG XY, YAN F, LUO ZZ, CHEN YJ
  • 作者关键词:  
  • 出版物名称:   CHINESE PHYSICS LETTERS
  • ISSN:   0256-307X EI 1741-3540
  • 通讯作者地址:  
  • 被引频次:   4
  • DOI:   10.1088/0256-307X/39/4/045201
  • 出版年:   2022

▎ 摘  要

Uniformly dispersed nickel single atoms (SAs) are experimentally prepared on ultralight N-doped graphene aerogels (Ni-SA@NRGA). The experimental results show that Ni-SAs in graphene aerogels can improve the conduction, polarization losses, and impedance matching properties of the Ni-SA@NRGA. As a result, the minimum reflection loss (R (L,min)) of Ni-SA@NRGA is -49.46 dB with a matching thickness of 2.0 mm and the broadest efficient absorption bandwidth is 3.12 GHz at a low thickness of 1.5 mm. Meanwhile, even with a matching thickness of 1.2-2.0 mm, the R (L,min) value of Ni-SA@NRGA can reach -20 dB. The current study demonstrates the significance of incorporating metal single atoms into graphene aerogel for electromagnetic wave absorption.