Abstract
A carbon-coated Li3V2(PO4)3 material was prepared by a two-step reaction using a kind of biomass feedstocks, bamboo, as the reaction carrier. The structure and morphology were detected by X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). Its electrochemical properties were assessed using a constant current test; the results showed stable cycle performance and a high discharge capacity. Its specific capacity can reach 132.8 mAh g−1 at 0.2 C under the voltage range of 2–4.3 V. After 160 cycles, the retention of the initial discharge capacity was 92.2%. The simulated data for the charge-transfer resistance and the calculated value of lithium ion diffusion coefficient were 89.76 Ω and 1.47 × 10−11 cm s−1, respectively, indicating that this material exhibits excellent ionic and electronic conductivity.
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