Advanced Anode Materials Based on Iron Oxides for Lithium-Ion Batteries

Three main iron oxides, FeO, Fe 2 O 3 , and Fe 3 O 4 , have attracted much attention as anode materials for lithium-ion batteries (LIBs) for their high theoretical capacity, low cost, large-scale reserves, and environmental benignity. However, the poor cycling life and rate capability limit their commercial application on a large scale. Glaring strategies have been adopted to improve the performance of lithium storage. In this review, the electrochemical performances of FeO, Fe 2 O 3 , and Fe 3 O 4 anode materials could be improved by the decrease in particle size, regulation and control of the nanomicrostructures, the improvement of electrical conductivity, and the design of composites. Their effects on the electrochemical performance of the anode materials are discussed in detail. Furthermore, the development prospect of iron oxide-basedanode material has been prospected.