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,pol...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 d B 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 RL,min value of Ni-SA@NRGA can reach-20 d B.The current study demonstrates the significance of incorporating metal single atoms into graphene aerogel for electromagnetic wave absorption.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.51972077)the Heilongjiang Touyan Innovation Team Programthe Fundamental Research Funds for the Central Universities(Grant Nos.3072020CF2518,3072020CFT2505,and 3072020CFJ2503)。
文摘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 d B 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 RL,min value of Ni-SA@NRGA can reach-20 d B.The current study demonstrates the significance of incorporating metal single atoms into graphene aerogel for electromagnetic wave absorption.
