SOLID STATE REACTION SYNTHESIS AND ELECTROCHEMICAL CHARACTERIZATION OF Na2Ti3O7 AS ANODE MATERIAL FOR SODIUM ION BATTERIES

In this work, we were successfully synthesized Na2Ti3O7 material by solid state reaction method which used NaOH and TiO2 as the precursors. Structural and morphological characterization of synthesized materials were confirmed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD results indicated that, the Na2Ti3O7 material with single crystal structure is formed at a reaction temperature of 900oC. The electrochemical performance of Na2Ti3O7 material is evaluated by performing galvanostatic charge-discharge (GCD) analysis on the CR2032 cells at different rates. The Na2Ti3O7 material delivered a specific capacity of 189 mAh/g at 0.1C within the potential range from 0 to 2.5 V. The results suggest that the Na2Ti3O7 is a promising material as anode electrode for sodium ion batteries.