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

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.