Preparation of Li₄Ti₅O₁₂ from nanocrystalline TiO₂ and it's lithiation performance

Three lithium titanium composite oxides were prepared from different TiO₂, and the electrochemical performance of the composite oxides was tested. The results proved that, Li₄Ti₅O₁₂ prepared from nanocrystalline titanium dioxide showed a good lithiation performance. The reversible capacity of the material was more than 95 mA·h·g^-1, the charge-discharge efficiency was almost 100% and the cyclic performance was good. When the lithium intercalation ≥ 85% or the lithium extraction ≥ 90%, its charge potential or discharge potential would change quickly. This Li₄Ti₅O₁₂ is good candidate material of negative electrode for lithium-ion battery.