An interlayer nanostructure of rGO/Sn2Fe-NRs array/rGO with high capacity for lithium ion battery anodes

Abstract

An interlayer nanostructure of rGO/Sn2Fe-NRs array/rGO was synthesized via a versatile integration of Sn2Fe nanorods (NRs) array in between reduced graphene oxide (rGO) nanosheets. Impressively, as an anode material for lithium ion batteries, the as-prepared nanocomposites deliver a high specific capacity of 690 mA h g(-1) at a current density of 0.5 C (500 mA g(-1)), and 582 mA h g(-1)at 1 C (1000 mA g(-1)) with exceptional rate capability and cycling stability over 600 cycles. These significantly improved electrochemical properties benefit from the high structural stability and electrical conductivity of rGO/Sn2Fe-NRs array/rGO interlayer nanostructures. It is demonstrated that the designed interlayer nanostructures are outstanding architectures for lithium ion battery anodes.