| Effect of Different Solvents on the Synthesis of
-Vanadyl Phosphate and Its Performance as
Cathode for Li-ion Battery |
B. M. Azmi*, A. Mohd. Shariff, S. Maitra** and T. Ishihara***
Pages: 235-239
DOI : 10.1080/0371750X.2010.11090841 |
| Abstract |
| In the present work -vanadyl phosphate (VOPO4) was synthesized in the presence of different solvents like water, ethanol, diethyl ketone and 2-propanol. Role of these solvents on the Li-intercalation behaviour of synthesized -VOPO4 has been studied. The solvents affected significantly the size of the crystallites and the level of impurities in the synthesized material. -VOPO4 synthesized using water as solvent, possessed a significant Li-intercalation capacity ca., 124 mAh.g–1 at 3.7 V corresponding to 75% of its theoretical capacity. Among the organic solvents used, sample prepared using ethanol exhibited the highest Li intercalation capacity. Small amount of -phase was observed in the synthesized -VOPO4 (with phosphate/vanadium ratio of 2) using ethanol and Li-intercalation capacity of this phase was about 137 mAh.g–1, corresponding to 85% of the theoretical capacity. The capacity was found to be almost stable at 110 mAh.g–1 over 100 cycles. |
| Full text : Subscribe to Download Full Text |
| [Go Back] |
|
