title: Reduced graphene oxides: the thinnest and most lightweight materials with highly efficient microwave attenuation performances of the carbon world.
abstract: In this work, reduced graphene oxide (r-GO) and graphite nanosheet (GN) were obtained via the chemical approach. Furthermore, r-GO composites and GN composites were prepared with a paraffin wax host. r-GO composites show high dielectric properties and electromagnetic interference shielding efficiency (EMI SE). Compared with the GN composites, the loss tangent and EMI SE of the r-GO composites with the same mass ratio are enhanced ∼5 to 10 times and ∼3 to 10 times, respectively. The enhanced attenuation capacity arises from higher specific surface area, clustered defects and residual bonds of the r-GOs, which increase the polarization loss, scattering and conductivity of the composite. Moreover, the higher conductivity of r-GO composites leads to higher EMI SE compared with that of GN composites. These results suggest that r-GOs are highly promising fillers for microwave attenuation in the carbon family and that r-GO composites are high-performance EMI shielding materials with application anticipated to many fields.
authors.affiliation: School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, P.R. China. caomaosheng@bit.edu.cn hbjin@bit.edu.cn.
authors.forename: B
authors.initials: B
authors.lastname: Wen
authors.forename: X X
authors.initials: XX
authors.lastname: Wang
authors.forename: W Q
authors.initials: WQ
authors.lastname: Cao
authors.forename: H L
authors.initials: HL
authors.lastname: Shi
authors.forename: M M
authors.initials: MM
authors.lastname: Lu
authors.forename: G
authors.initials: G
authors.lastname: Wang
authors.forename: H B
authors.initials: HB
authors.lastname: Jin
authors.forename: W Z
authors.initials: WZ
authors.lastname: Wang
authors.forename: J
authors.initials: J
authors.lastname: Yuan
authors.forename: M S
authors.initials: MS
authors.lastname: Cao