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Novel preparation and electrochemical characteristics of Li3V2(PO4)3/C composite materials

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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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Acknowledgements

This study was supported by the National Natural Science Foundation of China (No. 21661030).

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, Xinjiang, 830054, China

    Yu Zhang, Yingbo Wang & Zhi Su

  2. Engineering Research Center of Electrochemical Technology and Application, Xinjiang Normal University, Urumqi, Xinjiang, 830054, China

    Yingbo Wang & Zhi Su

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  1. Yu Zhang
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  2. Yingbo Wang
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  3. Zhi Su
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Correspondence to Zhi Su.

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Zhang, Y., Wang, Y. & Su, Z. Novel preparation and electrochemical characteristics of Li3V2(PO4)3/C composite materials. J Aust Ceram Soc 53, 539–543 (2017). https://doi.org/10.1007/s41779-017-0065-3

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  • DOI: https://doi.org/10.1007/s41779-017-0065-3

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