Co3O4 Nanoflake as High Capacity Anode Materials for Superior Lithium Storage Performance

Developing new anode materials with high capacity, energy density is of great importance for the application of the lithium-ion batteries. Herein, the lithium storage performance of Co3O4 as anode materials is studied by using different morphologies of Co3O4 samples, which are obtained at different temperatures. The morphology and structure of the samples are characterized by using SEM, TEM and XRD measurements. The surface area and pore size of the samples are tested by BET analysis. The lithium storage performance of the different Co3O4 sample is characterized by discharge/charge, CV and EIS tests. It demonstrates that the as-prepared CONF-1 anode exhibits high initial capacity of 1218 mAh g-1 and keep stable capacity of 785 mAh g-1 after 300 cycles at high current density of 1 A g-1. The results reported in this work could provide strategies for exploring novel high-performance anode materials from transition metal oxides.