Abstract

A monoclinic Li3V2(PO4)/C (LVP/C) with nanostructured morphology was synthesized via a one-step pyro-synthesis, for use as cathode material in rechargeable Li-ion batteries. Highly crystalline LVP/C nanoparticles can be obtained without additional heat treatment. The structural properties and morphology of the sample were studied using various analyses, including high resolution powder X-ray diffraction (HRPD), Raman spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The LVP/C cathode exhibited initial discharge capacities of 139 and 190.3mAhg−1 within the potential windows of 3–4.3V and 3–4.8V, respectively. These results indicate that the formation of nanosized particles and the presence of amorphous carbon layer influence the electrochemical properties LVP/C electrode. Specifically, the present pyro-synthesis strategy facilitates the production of LVP cathode materials with improved cyclability and rate capability under a very short reaction time.

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