Synthesis And Electrochemical Performance Of Fe-Ti-O Solid Solution

In order to meet the application requirements of high-performance lithium-ion secondary battery, researchers are continuing to devote their talents on exploration of different materials or deffrent structures. To enhance the property of anode material, the synthesis of nanomaterials, structural functionalization and doping are usually used choice to improve the specific capacity and cycle stable property.Iron oxides have good lithium-storage properties and with the theoretical specific capacities of more than 650mAh/g, especially, the theoretical specific capacity of Fe3O4 achieves 1005mAh/g. However, the insertion or extraction processes of lithium ion result in large volume change, which will cause pulverization, structure collapses and poor cycle stable properties. As a "zero strain" material, even though the titanium dioxide has good cycle stable property, it also has low specific capacity, and the theoretical capacity of only 168mAh/g.In order to obtain the anode material with high specific capacity and good cycling stable property, we synthesised Fe-Ti-O solid solution materials by hydrothermal method. The effects of Ti/Fe ratio, heat treatment condition and...