Electrospun Li3V2(PO4)3 Nanobelts: Synthesis and Electrochemical Properties as Cathode Materials of Lithium-Ion Batteries

Novel Li3V2(PO4)(3) nanobelts, which was confirmed by the peaks of X-ray diffraction, were prepared by a facile and environmentally friendly electrospinning method. A distinct nanobelt structure, with an average width of 2.5 mu m and a thickness of 200 nm, is observed by scanning electron microscopy (SEM), while the specific surface area of 140.8 m(2)/g is estimated by a specific surface area analyzer. Moreover, the unique Li3V2(PO4)(3) nanobelts exhibited a specific discharge capacity of 155.6 mAh/g at 0.2 C rate when they were used as cathode material in lithium-ion batteries, on testing from 3.0 to 4.8 V. Remarkably, the batteries containing Li3V2(PO4)(3) nanobelts displayed excellent cycling performance, with only a 0.02% fading rate per cycle after 50 cycles in the range 30-4.3 V. These outstanding electrochemical performances could be ascribed to the particular morphology, large surface area, homogeneous particle size distribution, and the one-dimensional microstructure of Li3V2(PO4)(3) nanobelts.