Synthesis and Electrochemical Properties of High-Rate Spinel Li₄Ti₅O_l2/TiN Anode Material for Lithium-Ion Batteries

Spinel Li4Ti5Ol2/TiN was successfully prepared by sol-gel processing using acetylacetone (ACAC) as a chelating ligand and polyethylene glycol (PEG) as a dispersant. The effect of the TiN film on the electrochemical properties of spinel Li4Ti5Ol2 for lithium-ion batteries was studied. The Li4Ti5Ol2/TiN was analyzed by X-ray photoelectron spectroscopy (XPS). X-ray diffraction (XRD) patterns and scanning electron microscope (SEM) images showed that this anode material with the TiN film was pure spinel Li4Ti5Ol2 and was of sub-micron size. The initial specific discharge capacity of the Li4Ti5Ol2/TiN is 173.0 mAh·g - 1