Li₄Ti₅O₁₂ has the advantages of resource, performance, and so on. Recently, Li₄Ti₅O₁₂ anode material is becoming an important research direction in the field of energy storage and power battery. In this review, the effects of doping ions with the different doping sites in the crystal lattice and its intrinsic properties on the structure and performance of Li₄Ti₅O₁₂ were discussed. Substitution of doping ions for Li ions on the tetrahedral 8a sites would lower the Li-ion conductivity. Substitution of doping ions for Li ions on the octahedral 16d sites may "correct" distribution of alkali metal ions. Substitution of doping ions for Ti ions on the octahedral 16d sites would affect structural stability of Li₄Ti₅O₁₂. Substitution of doping ions for O ions on the octahedral 32e sites would affect the conductivity. In certain conditions, if the valence state of doping ions is higher than the substituted ions, the electronic conductivity of Li₄Ti₅O₁₂ could be improved. Doping elements with different energy band structures and redox behaviors affect the electrochemical reaction process of Li₄Ti₅O₁₂. The different ionic radius and the number allowed to enter the lattice of doping ions would change the Li₄Ti₅O₁₂ lattice constant and microstructure morphology.

Contents
1 Introduction
2 Structure properties of Li₄Ti₅O₁₂
3 Doping of Li₄Ti₅O₁₂
3.1 Position of dopants
3.2 Properties of dopants
3.3 Atmosphere of doping
4 Latest developments
5 Conclusion and outlook