Synthesis of Fe2O3-CNT-graphene hybrid materials with an open three-dimensional nanostructure for high capacity lithium storage

► Hybrid materials with 3D nanostructure were synthesized by a CVD method. ► The growth of bamboo-like carbon nanotubes was catalyzed by Fe nanorings. ► Fe2O3-CNT-GNS materials exhibited superior performance in Li ion batteries. ► Open 3D nanoarchitecture contributes to fast lithium storage.