Alpha phase iron oxide has been investigated as active anode material for lithium ion batteries because of high theoretical specific capacity, low cost and eco-friendly nature. Porous nanostructured electrode materials directly deposited on current collectors effectively enhance the rate performance of Li-ion batteries. The unique structure provides open channels for electrolyte penetration and short diffusion pathways for Li ions and electrons. In addition, the open spaces can accommodate the large volume change from the repeated conversion reaction of α-Fe₂O₃ during cycling.

A simple and economical manufacturing approach of the nanostructured electrodes is essential to the development and application of the next generation Li-ion batteries. In this study, nanostructured α-Fe₂O₃ electrodes are fabricated by reactive spray deposition technology (RSDT) which is a single-step flame combustion synthesis method. This process is continuous and scalable. The structure and morphology of as-prepared electrode are investigated by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. Electrochemical properties of the nanostructured α-Fe₂O₃ electrodes are studied using cyclic voltammetry, galvanostatic charge/discharge cycling and electrochemical impedance spectroscopy in half-cell configuration.