2.1. Synthesis of electrode materials
Fig. 1. Schematic illustration of the in-situ microwave irradiation route for preparing nanosized Li3V2(PO4)3/RGO composite.Figure optionsDownload full-size imageDownload as PowerPoint slide
2.2. Structure and morphology characterization
The crystallographic characteristics of the as-synthesized samples were examined by X-ray diffraction (XRD) using Refametinib Rigaku 2500 powder diffractometer (Cu Kα radiation, λ = 1.54056 Å). Scanning electron microscope (SEM) analysis has been performed by using a Philips XL30-FEG field emission scanning electron microscopy equipped with an energy-dispersive X-ray spectrometer. The morphologies of the powders were further observed by transmission electron microscopy (TEM, JEM-2100). The structural variations of carbonaceous material in the Li3V2(PO4)3/C and graphene-modified Li3V2(PO4)3/C samples are identified by Raman spectroscopy (Renishaw Raman Microscope, 532nnm HeNe Laser).