Synthesis and performance of LiNiTiO as a new anode material for lithium-ion batteries.

The titanate spinel LiNiTiO is proposed for the first time as a new anode for lithium-ion batteries and successfully synthesized via a facile ball-milling assisted solid-state reaction method. The sample is characterized by X-ray diffraction patterns (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), galvanostatic charge-discharge tests, cyclic voltammetry (CV) tests, and electrochemical impedance spectroscopy (EIS). The results reveal that the LiNiTiO nanoparticles have well-distributed morphology, and the particle size ranges between 100 and 300 nm. Although the initial coulombic efficiency is only 56.3 %, the LiNiTiO electrode still exhibits a high rate capability and excellent cycling stability. The LiNiTiO anode provides a large capacity of 212.3 mAh g at 0.1 A g after 10 cycle, which is close to its theoretical capacity (223.6 mAh g). Even after 100 cycles, it still delivers a quite high capacity of 203.98 mAh g, with no significant capacity fading. This indicates that the as-synthesized LiNiTiO material is a promising anode material for lithium-ion batteries. [ABSTRACT FROM AUTHOR]