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author:

Huang, C. (Huang, C..) [1] | Chen, D. (Chen, D..) [2] | Huang, Y. (Huang, Y..) [3] | Guo, Y. (Guo, Y..) [4]

Indexed by:

Scopus

Abstract:

The Li3V2(PO4)3/C composite (LVP) including nanorods and irregular solids were successfully prepared by a sol-gel method. The influences of different precursors on the LVP cathode materials were investigated by using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), particle size distribution measurement and electrochemical methods. The LVP/C electrodes present good rate capability and excellent cyclic performance when they cycle in the range of 3.0-4.3 V. The LVP1/C composite prepared by NH4H 2PO4, LiOH, NH4VO4 and citric acid delivers the initial discharge capacity of 109.6 mAh g-1 at 20 C discharge rate and it still maintains 56.9 mAh g-1 after 450 cycles, with the discharge capacity retention of 51.9%. For the LVP2/C composite synthesized by LiH2PO4, NH4VO4 and citric acid, however, the discharge capacities in the 1st and 450th cycles at 20 C discharge rate are 107.1 and 96.2 mAh g-1, respectively, with only 10.2% loss. The excellent rate capacity is attributed to the pure phases, nanorod structure, small particles and uniform carbon coating. © 2013 Elsevier Ltd.

Keyword:

Conductivity; Li3V2(PO4)3/C composite; Nanorods; Rate capability; Sol-gel

Community:

  • [ 1 ] [Huang, C.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China
  • [ 2 ] [Chen, D.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China
  • [ 3 ] [Huang, Y.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China
  • [ 4 ] [Guo, Y.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China

Reprint 's Address:

  • [Guo, Y.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China

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Source :

Electrochimica Acta

ISSN: 0013-4686

Year: 2013

Volume: 100

Page: 1-9

4 . 0 8 6

JCR@2013

5 . 5 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 27

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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