Facile synthesis of Li3V2 (PO4 )3 /C cathode material for lithium-ion battery via freeze-drying

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In this work, we report a facile route for the synthesis of Li 3 V 2 (PO 4 ) 3 /C cathode material via freeze- drying and then calcination. The effect of calcination temperature on the electrochemical properties of the Li 3 V 2 (PO 4 ) 3 /C is also investigated. When used as a lithium-ion battery cathode, the optimized Li 3 V 2 (PO 4 ) 3 /C (LVP-800) through calcination at 800 ℃ exhibits a high initial charge and discharge ca- pacity. The excellent electrochemical performance of LVP-800 is attributed to the good crystallinity and uniform morphology of the electrode material. In addition, the residual carbon can also improve the con- ductivity and buffer the volume expansion during the Li-ion extraction/reinsertion. Meanwhile, charge compensation also plays an important role in excellent electrochemical performance.
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