Microrod Superstructure of Graphene Nanocages with Enhanced Microwave Absorption Performance

Abstract

The carbon based microwave absorption materials are considered as new generation absorbers owing to their lightweight, thin-thickness and good electronic conductivity. The challenge to develop excellent carbon absorbers is to decrease its skin effect and improve its impedance matching behavior. In this study, the microrod superstructure of graphene nanocages (MSGN) have been prepared via a CVD method using MgO template. The MSGN realizes an optimal reflection loss of -52.45 dB and an effective absorption bandwidth of 14.64 GHz . The unique superstructure can effectively promote interfacial polarization loss and improve impedance matching behavior , thus resulting in an enhanced microwave absorption performance. Besides, the Radar Cross Section (RCS) simulation delivers the reduction value of 13.50 dBm 2 at the detective angel of 0 o , and suggests that MSGN can be an eligible absorber for actual application.

Keywords: graphene nanocages； superstructure； microwave absorption； RCS simulation