Graphene-wrapped single-crystalline Fe3O4 nanorods with superior lithium-storage capabilities

A novel type of graphene-supported Fe3O4 nanohybrid, i.e. graphene wrapped single-crystalline Fe3O4 nanorods (Fe3O4@G nanorods), has been synthesized through a layer-by-layer assembly and a subsequent annealing approach. The as-synthesized Fe3O4@G nanorods have been used as anode materials for lithium-ion batteries, and manifest superior lithium-storage capabilities in terms of high reversible capacities, excellent capacity retention, and high rate capability.