RHEOLOGICAL PHASE SYNTHESIS AND CHARACTERIZATION OF MICRO-SIZED Li4Ti5O12

Abstract

Zero-strain anode material of Li 4 Ti 5 O 12 for lithium ion battery was successfully synthesized via the rheological phase reaction (RPR) method. The as-prepared powders were characterized by means of powder X-ray diffraction (XRD), scanning electron microscope (SEM) and particle size distribution analysis (PSD), and the electrochemical properties of the powders were evaluated by the galvanostatic discharge test and cyclic voltammetry (CV). The results revealed that wellcrystallized uniform micro-sized Li 4 Ti 5 O 12 powders were obtained at 800°C for different calcination times via the simple template-free rheological phase route. Among these RPR-derived Li 4 Ti 5 O 12 powders, one synthesized at 800°C for 22 h displays the initial discharge capacity of 184.3 mAh/g and excellent characteristic of cyclic voltammetry.