Comprehensive Electrochemical Studies of Tavorite LiTiPO 4 F/C Electrode for Rechargeable Lithium Ion Battery

The objective of the present work is the synthesis of LiTiPO 4 F/C electrode material by Ionothermal method using 1,2‐dimethyl‐3‐(3‐hydroxypropyl) imidozolium dicyanamide ionic liquid as a reacting medium and the study of detailed electrochemical performance in non‐aqueous electrolytes. Ionothermally prepared LiTiPO 4 F/C has shown significant improvements in terms of long term cyclic performance, good rate capability and high reversible capacity. The electrochemical properties were evaluated using cyclic voltammetry, galvanostatic charge/discharge studies, electrochemical impedance spectroscopy, potentiostatic intermittent titration technique and galvanostatic intermittent titration techniques. The half‐cell, LiTiPO 4 F/C vs. Li/Li + yields a capacity of 153 mA h g −1 for first cycle and 131 mA h g −1 for 200 th cycle at C/15 rate. Stable cycling life was achieved with more than 85 % columbic efficiency. The full cell configuration vs. graphite as anode yields a capacity of 149 mA h g −1 for first cycle and 129 mA h g −1 for 200 th cycle at C/15 rate with more than 83 % efficiency. Effect of temperature, Ex‐situ X‐ray analysis for the study the capacity fading mechanism and influence of carbon coating on the electrochemical performance of LiTiPO 4 F vs. Li/Li + was also studied in detail. Based on this report, it is suggested that LiTiPO 4 F/C can be used as cathode for high‐performance Li‐ion batteries which are available as large‐scale energy storage devices.