The Preparation of Fe3O4 Thin Film and Its Electrochemical Characterization for Li-Ion Battery

Abstract

In this study, the Fe3O4 thin film was prepared as anode materials to simultaneously provide higher reversible Li+ capacity compared to 2D materials with high cycle properties for lithium ion batteries. Nano-crystalline Fe3O4 thin film has been prepared by using an electron beam evaporation system followed by heat treatment. Electrochemical measurement showed that the as-fabricated Fe3O4 thin film showed the conventional charge–discharge voltage profiles of magnetite and good cycle performance. The initial reversible capacity of Fe3O4 thin film was maintained during the 100 cycles with no capacity fading in a potential range of 0.005–3.0 V (vs. Li+/Li).