Skip to main content

Preparation and electrochemical properties of high-capacity LiFePO 4-Li3V2(PO4)3/C composite for lithium-ion batteries

Journal Article


Abstract


  • LiFePO4-Li3V2(PO4) 3/C (LFP-LVP/C) composite is prepared by a modified solid-state method, along with LFP/C composite as a reference. The structure and morphology of the as-prepared materials are analyzed by X-ray diffraction (XRD) and electron microscopy. LFP-LVP/C composite is well-crystallized and a matrix is formed by conductive carbon surrounding the LFP-LVP particles. LFP-LVP/C exhibits V-doped LFP in the bulk phase as determined by Rietveld analysis of XRD data, and mixed phase regions of V-doped LFP and LVP when analyzed at the particle-scale using high-resolution transmission electron microscopy. Electrochemical tests show that the initial discharge capacity of the LFP-LVP/C composite is 165.2 mAh g-1 at 0.1 C. Furthermore, the composite exhibits excellent performance with an initial discharge capacity of 135.4 mAh g-1 at a constant current density of 1 C, with no noticeable capacity fading after 100 cycles (141.6 mAh g-1), which is higher than that of LFP/C prepared by the same method for comparison. Thus, the introduction of LVP acts to improve electronic conductivity and Li+ diffusion of LFP/C. © 2013 Elsevier B.V. All rights reserved.

Authors


  •   Guo, Y F. (external author)
  •   Haung, Yudai (external author)
  •   Jia, Dianzeng (external author)
  •   Guo, Zaiping
  •   Tang, Xincun (external author)

Publication Date


  • 2014

Citation


  • Guo, Y. F., Huang, Y., Jia, D., Wang, X., Sharma, N., Guo, Z. & Tang, X. (2014). Preparation and electrochemical properties of high-capacity LiFePO 4-Li3V2(PO4)3/C composite for lithium-ion batteries. Journal of Power Sources, 246 912-917.

Scopus Eid


  • 2-s2.0-84884186065

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/840

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 912

End Page


  • 917

Volume


  • 246

Place Of Publication


  • Switzerland

Abstract


  • LiFePO4-Li3V2(PO4) 3/C (LFP-LVP/C) composite is prepared by a modified solid-state method, along with LFP/C composite as a reference. The structure and morphology of the as-prepared materials are analyzed by X-ray diffraction (XRD) and electron microscopy. LFP-LVP/C composite is well-crystallized and a matrix is formed by conductive carbon surrounding the LFP-LVP particles. LFP-LVP/C exhibits V-doped LFP in the bulk phase as determined by Rietveld analysis of XRD data, and mixed phase regions of V-doped LFP and LVP when analyzed at the particle-scale using high-resolution transmission electron microscopy. Electrochemical tests show that the initial discharge capacity of the LFP-LVP/C composite is 165.2 mAh g-1 at 0.1 C. Furthermore, the composite exhibits excellent performance with an initial discharge capacity of 135.4 mAh g-1 at a constant current density of 1 C, with no noticeable capacity fading after 100 cycles (141.6 mAh g-1), which is higher than that of LFP/C prepared by the same method for comparison. Thus, the introduction of LVP acts to improve electronic conductivity and Li+ diffusion of LFP/C. © 2013 Elsevier B.V. All rights reserved.

Authors


  •   Guo, Y F. (external author)
  •   Haung, Yudai (external author)
  •   Jia, Dianzeng (external author)
  •   Guo, Zaiping
  •   Tang, Xincun (external author)

Publication Date


  • 2014

Citation


  • Guo, Y. F., Huang, Y., Jia, D., Wang, X., Sharma, N., Guo, Z. & Tang, X. (2014). Preparation and electrochemical properties of high-capacity LiFePO 4-Li3V2(PO4)3/C composite for lithium-ion batteries. Journal of Power Sources, 246 912-917.

Scopus Eid


  • 2-s2.0-84884186065

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/840

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 912

End Page


  • 917

Volume


  • 246

Place Of Publication


  • Switzerland