Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
권호 표지
DOI QR코드

DOI QR Code

Electrochemical Properties of LixCoyNi1-yO2 Prepared by Citrate Sol0Gel Method

  • Published : 1997.01.20
Download PDF
⟨ Previous Next ⟩

Abstract

The electrochemical properties of LixCoyNi1-yO2 compounds (y=0.1, 0.3, 0.5, 0.7, 1.0) prepared by citrate sol-gel method have been investigated. The LixCoyNi1-yO2 compounds were annealed at 850 ℃ for 20 h after preheating at 650 ℃ for 6 h, in air. The x-ray diffraction (XRD) patterns for LixCoyNi1-yO2 have shown that these compounds have a well developed layered structure (R&bar{3} m). From the scanning electron microscopy of LixCoyNi1-yO2, particle size was estimated less than 5 μm. The Li//LixCoyNi1-yO2 electrochemical cell consists of Li metal anode and 1 M LiClO4-propylene carbonate (PC) solution as the electrolyte. The differences in intercalation rate of the LixCoyNi1-yO2 in the first charge/discharge cycle were less than 0.05 e-. The first discharge capacities of LixCoO2 and LixCo0.3Ni0.7O2 were ∼130 mAh/g and ∼160 mAh/g, respectively.

Keywords

References

  1. Solid State Ionics v.44 Dahn, J. R.;Sacken, U. von;Michal, C. A.
  2. Mat. Res. Bull. v.25 Morales, J.;Perez-Vicente, C.;Tirado, J. L.
  3. J. Electrochem Soc. v.140 Ohzuku, T.;Ueda, A.;Nagayama, M.
  4. J. Solid State Chem. v.96 Dutta, G.;Manthiram, A.;Goodenough, J. B.;Grenier, J. C.
  5. Solid State Comm. v.94 Rougier, A.;Delmas, C.;Chadwick, A. V.
  6. J. Electrochem. Soc. v.138 Dahn, J. R.;Sacken, U. von;Juzkow, M. W.;Al-Janaby, H.
  7. Mat. Res. Bull. v.15 Mizushima, K.;Jones, P. C.;Wiseman, P. J.;Goodenough, J. B.
  8. Mat. Res. Bull. v.17 Delmas, C.;Braconnier, J. J.;Hagenmuller, P.
  9. J. Power Sources v.21 Plichta, E.;Salomon, M.;Slane, S.;Uchiyama, M.
  10. J. Electrochem. Soc. v.136 Plichta, E.;Slane, S.;Uchiyama, M.;Salomon, M.;Chua, D.;Ebner, W. B.;Lin, H. W.
  11. J. Electrochem Soc. v.139 Dahn, J. R.;Reimers, J. N.
  12. J. Electrochem Soc. v.140 Dahn, J. R.;Reimers, J. N.;Sacken, U. von
  13. J. Electrochem Soc. v.141 Ohzuku, T.;Ueda, A.
  14. J. Power Sources v.39 Bludska, J.;Vondrak, J.;Stopka, P.;Jakubec, I.
  15. J. Power Sources v.40 Yoshio, M.;Tanaka, H.;Tominaga, K.;Noguchi, H.
  16. J. Solid State Chem. v.94 Barboux, P.;Tarascon, J. M.;Shokoohi, F. K.
  17. Solid State Ionics v.69 Guyomard, D.;Tarascon, J. M.
  18. Solid State Ionics v.70/71 Zachau-Christiansen, B.;West, K.;Jacobsen;Skaarup, S.
  19. Solid State Ionics v.73 Richard, M. N.;Fuller, E. W.;Dahn, J. R.
  20. Solid State Ionics v.53-56 Delmas, C.;Saadoune, I.
  21. J. Power Sources v.43-44 Delmas, C.;Saadoune, I.;Rougier, A.
  22. Solid State Ionics v.66 Zhecheva, E.;Stoyanova, R.
  23. J. Electrochem. Soc. v.141 Ueda, A.;Ohzuku, T.
  24. Solid State Comm. v.90 Menetrier, M.;Rougier, A.;Delmas, C.
  25. J. Phys. Chem. Solids v.48 Hewston, T. A.;Chamberland, B. L.