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Compositing with metal oxides is proved to be an efficient strategy to improve electrochemical performance of anode material Li 4 Ti 5 O 12  for lithium-ion batteries. Herein, spherical Li 4 Ti 5 O 12 /NiO composite powders have been successfully prepared via a spray drying method. X-ray diffraction and high-resolution transmission electron microscopy results demonstrate that crystal structure of the powders is spinel. Scanning electron microscopy results show that NiO uniformly distributes throughout Li 4 Ti 5 O 12  matrix. It is found that compositing with NiO increases both discharge platform capacity and rate stability of Li 4 Ti 5 O 12 . The as-prepared Li 4 Ti 5 O 12 /NiO (5%) exhibits a high initial discharge capacity of 381.3 mAh g −1  at 0.1 C, and a discharge capacity of 194.7 mAh g −1  at an ultrahigh rate of 20 C.

Spherical Li4Ti5O12/NiO Composite With Enhanced Capacity and Rate Performance as Anode Material for Lithium-Ion Batteries