▎ 摘 要
Successful fabrication of nanoporous metal oxides with carbonaceous nanomaterials can enhance the conductivity of electrodes as well as advance their electrochemical activity to overcome the stress induced during continuous charge-discharge cycling, and this is an effective way to harness their excellent reversible theoretical capacity. Nanoporous hematite (alpha-Fe2O3) nanorods have been prepared through an advanced spray precipitation method and nanofabricated with reduced graphene oxide (rGO) sheets by simply mixing solutions. This approach helps to introduce a continuous conductive network in between the nanorods to enhance ion interactions, giving the composite a promising electrochemical response as a negative electrode for the lithium-ion battery (LIB). The nanocomposites delivered an outstanding reversible capacity of 1330 mA h g(-1) at 100 mA g(-1) for 100 cycles and showed excellent rate retention during cycling at different current densities over long cycle numbers, highlighting the potential of this material with its specially designed nano-architecture as an anode material for high energy LIBs for electric vehicles. Along with the overwhelming electrochemical performance of chemically modified graphene-oxide-wrapped hematite porous nanorods (alpha-Fe2O3/rGO), the abundance of the hematite source, and the advanced and environmentally friendly synthesis approach show the potential for large-scale preparation of such electrode materials for real world application.