Issue

Vol. 26 No. 19 (2014): Vol 26 Issue 19

Copyright (c) 2014 AJC

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Effect of Vanadium Modification on Electrochemical Performance of LiFePO4/C

https://doi.org/10.14233/ajchem.2014.16414
Ying Zhang
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, P.R. China ; Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, P.R. China
Jianjun Song
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, P.R. China ; Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, P.R. China
Guangjie Shao
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, P.R. China ; Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, P.R. China
Zhipeng Ma
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, P.R. China ; Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, P.R. China
Guiling Wang
Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, P.R. China

Corresponding Author(s) : Guangjie Shao

shaoguangjie@ysu.edu.cn

Asian Journal of Chemistry, Vol. 26 No. 19 (2014): Vol 26 Issue 19

Abstract

A series of vanadium doped LiFePO4/C were synthesized by the carbothermal reduction method combining with balling technique. Results show that only a little of vanadium substitutes for iron site in the crystal lattice of olivine LiFePO4 and impurity phases are detected when the vanadium content is over 0.5 mol %. LiVOPO4, the first impurity phase, is discovered as vanadium content ranges from 1 mol to 5 mol % and disappears at high doping level. Li3V2(PO4)3 and vanadium oxide are gained when vanadium content is over 5 mol %. The special charge/discharge capacity and rate capability are enhanced on a certain extent by vanadium doping and LiFe0.975V0.025PO4 shows the most outstanding property among all samples. The improvement of electrochemical performance of LiFePO4 mainly resulted from the formation of impurity phases, LiVOPO4, instead of the vanadium doping into LiFePO4 lattice. Thus, excellent electrochemical performance can be achieved by optimizing the content of vanadium.

Keywords

LiFePO4 Composites Vanadium doping X-ray diffraction Impurity phase
Zhang, Y., Song, J., Shao, G., Ma, Z., & Wang, G. (2014). Effect of Vanadium Modification on Electrochemical Performance of LiFePO4/C. Asian Journal of Chemistry, 26(19), 6425–6430. https://doi.org/10.14233/ajchem.2014.16414
Download Citation
Endnote/Zotero/Mendeley (RIS)
BibTeX
References
  1. M.X. Gao, Y. Lin, Y.H. Yin, Y.F. Liu and H.G. Pan, Electrochim. Acta, 55, 8043 (2010); doi:10.1016/j.electacta.2010.02.003.
  2. Y. Liu, C.H. Mi, C.Z. Yuan and X.G. Zhang, J. Electroanal. Chem., 628, 73 (2009); doi:10.1016/j.jelechem.2009.01.008.
  3. C. Delacourt, P. Poizot, S. Levasseur and C. Masquelier, Electrochem. Solid-State Lett., 9, A352 (2006); doi:10.1149/1.2201987.
  4. G.T. Fey, Y.G. Chen and H.M. Kao, J. Power Sources, 189, 169 (2009); doi:10.1016/j.jpowsour.2008.10.016.
  5. M. Wagemaker, B.L. Ellis, D. Lützenkirchen-Hecht, F.M. Mulder and L.F. Nazar, Chem. Mater., 20, 6313 (2008); doi:10.1021/cm801781k.
  6. Y.C. Ge, X.D. Yan, J. Liu, X.F. Zhang, J.W. Wang, X.G. He, R.S. Wang and H.M. Xie, Electrochim. Acta, 55, 5886 (2010); doi:10.1016/j.electacta.2010.05.040.
  7. J.W. Yao, F. Wu, X.P. Qiu, N. Li and Y. Su, Electrochim. Acta, 56, 5587 (2011); doi:10.1016/j.electacta.2011.03.141.
  8. Y. Yang, X.Z. Liao, Z.F. Ma, B.F. Wang, L. He and Y.S. He, Electrochem. Commun., 11, 1277 (2009); doi:10.1016/j.elecom.2009.04.021.
  9. C.S. Sun, Z. Zhou, Z.G. Xu, D.G. Wang, J.P. Wei, X.K. Bian and J. Yan, J. Power Sources, 193, 841 (2009); doi:10.1016/j.jpowsour.2009.03.061.
  10. J. Hong, C.S. Wang, X. Chen, S. Upreti and M.S. Whittingham, Electrochem. Solid-State Lett., 12, A33 (2009); doi:10.1149/1.3039795.
  11. J.S. Sakamoto and B. Dunn, J. Mater. Chem., 12, 2859 (2002); doi:10.1039/b205634h.
  12. J. Ma, B.H. Li, H.D. Du, C.J. Xu and F.Y. Kang, J. Electrochem. Soc., 158, A26 (2011); doi:10.1149/1.3514688.
  13. Y. Jin, C.P. Yang, X.H. Rui, T. Cheng and C.H. Chen, J. Power Sources, 196, 5623 (2011); doi:10.1016/j.jpowsour.2011.02.059.
  14. J. Barker, M.Y. Saidi, R.K.B. Gover, P. Burns and A. Bryan, J. Power Sources, 174, 927 (2007); doi:10.1016/j.jpowsour.2007.06.079.
  15. M.M. Ren, Z. Zhou, X.P. Gao, L. Liu and W.X. Peng, J. Phys. Chem. C, 112, 13043 (2008); doi:10.1021/jp804335b.
  16. F. Omenya, N.A. Chernova, S. Upreti, P.Y. Zavalij, K.W. Nam, X.Q. Yang and M.S. Whittingham, Chem. Mater., 23, 4733 (2011); doi:10.1021/cm2017032.
  17. L.L. Zhang, G. Liang, A. Ignatov, M.C. Croft, X.Q. Xiong, M. Hung, Y.H. Huang, X.L. Hu, W.X. Zhang and Y.L. Peng, J. Phys. Chem. C, 115, 13520 (2011); doi:10.1021/jp2034906.
  18. H.T. Kuo, N.C. Bagkar, R.S. Liu, C.H. Shen, D.S. Shy, X.K. Xing, J.F. Lee and J.M. Chen, J. Phys. Chem. B, 112, 11250 (2008); doi:10.1021/jp803210w.
  19. J.M. Tarascon and M. Armand, Nature, 414, 359 (2001); doi:10.1038/35104644.
  20. W.J. Zhang, J. Power Sources, 196, 2962 (2011); doi:10.1016/j.jpowsour.2010.11.113.
  21. G.X. Wang, L. Yang, Y. Chen, Z. Wang, S. Bewlay and H.K. Liu, Electrochim. Acta, 50, 4649 (2005); doi:10.1016/j.electacta.2005.02.026.
  22. J.L. Liu, R.R. Jiang, X.Y. Wang, T. Huang and A.S. Yu, J. Power Sources, 194, 536 (2009); doi:10.1016/j.jpowsour.2009.05.007.
Read More
Author biographies is not available.
Download
PDF
Statistic
Read Counter : 0 Download : 0