Construction of point-line-plane (0-1-2 dimensional) Fe sub(2)O sub(3)-SnO sub(2 )/graphene hybrids as the anodes with excellent lithium storage capability

The assembly of hybrid nanomaterials has opened up a new direction for the construction of high-performance anodes for lithium-ion batteries (LIBs). In this work, we present a straightforward, eco-friendly, one-step hydrothermal protocol for the synthesis of a new type of Fe sub(2)O sub(3)-SnO sub(2 )/graphene hybrid, in which zero-dimensional (0D) SnO sub(2) nanoparticles with an average diameter of 8 nm and one-dimensional (1D) Fe sub(2)O sub(3) nanorods with a length of ~150 nm are homogeneously attached onto two-dimensional (2D) reduced graphene oxide nanosheets, generating a unique point-line-plane (0D-1D-2D) architecture. The achieved Fe sub(2)O sub(3)-SnO sub(2 )/graphene exhibits a well-defined morphology, a uniform size, and good monodispersity. As anode materials for LIBs, the hybrids exhibit a remarkable reversible capacity of 1,530 mA.g super(-1) at a current density of 100 mA.g super(-1) after 200 cycles, as well as a high rate capability of 615 mAh.g super(-1) at 2,000 mA.g super(-1). Detailed characterizations reveal that the superior lithium-storage capacity and good cycle stability of the hybrids arise from their peculiar hybrid nanostructure and conductive graphene matrix, as well as the synergistic interaction among the components. [Figure not available: see fulltext.]