Changing the structure of lithium titanate (Li₄Ti₅O₁₂, Abbre. LTO) material by delithiation (activation) in advance, to increase the internal lithium ion vacancy and enhance the lithium intercalation ability, a high specific capacity LTO was prepared; and CMF (carbon nanotubes macro film) was introduced as a current collector instead of metal foil to improve its electrochemical stability; finally, a Li₄Ti₅O₁₂ electrode having high specific capacity and high stability was obtained. Characterization was executed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical testing. The results show that the activated Li₄Ti₅O₁₂ can achieve a specific capacity of 192.7 mAh/g at 1C rate, which is about 30 mAh/g higher than that of the normal Li₄Ti₅O₁₂ material. The introduced CMF current collector can enhance the binding force with the active material, and it still possesses a specific capacity of 150 mAh/g at 5C rate , exhibiting excellent rate performance.