N-doped graphene@polyaniline nanorod arrays hierarchical structures: Synthesis and enhanced electromagnetic absorption properties

•N-doped graphene@PANI nanorod arrays hierarchical structures were fabricated.•The reflection loss of the composites is below −10 dB in 6.5–8.8 GHz.•The maximum absorption of the composites is −37.4 dB at 15.1 GHz.

N-doped graphene@polyaniline nanorod arrays hierarchical structures were fabricated via in situ growth of polyaniline nanorod arrays on surfaces of N-doped graphene. The electromagnetic data demonstrate that the as-prepared hierarchical structures exhibit significantly enhanced microwave absorption properties compared with N-doped graphene. The enhanced electromagnetic performances would originate from the unique hierarchical structure and N-doping in host graphene.

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