Erythrocyte-Like Single Crystal α-Fe2O3 Anode Synthesized by Facile One-Step Hydrothermal Method for Lithium-Ion Battery

Transition metal oxides Fe2O3 as lithium-ion battery anode has aroused intense interest as a result of its high capacity (1007 mA h g(-1)). Nevertheless, the significant volume expansion during the cycling procession causes its capacity to decay sharply as the anode of lithium-ion battery. The size and morphology of materials are important factors improving the stability of electrode materials. However, most of the excellent morphology design needs complex processes. The single-crystalline erythrocyte-like alpha-Fe2O3 nanoparticles are synthesized by one-step hydrothermal method to improve the electrochemical properties of the alpha-Fe2O3 anode, and the Li+ storage kinetics of the erythrocyte-like alpha-Fe2O3 anode are investigated. As a lithium-ion battery anode material, the erythrocyte-like alpha-Fe2O3 anode exhibits an eminent reversible capacity of 1200.2 mA h g(-1) at 0.1 C after 100 cycles. In comparison to raw alpha-Fe2O3, the erythrocyte-like alpha-Fe2O3 performs with a better rate property. The special morphological design can effectively improve the stability of alpha-Fe2O3 electrode materials.