Synthesis and Characterization of Lamellar LiCoO2 as Cathode Materials for Lithium-Ion Batteries
OPEN ACCESS
Lamellar LiCoO2 cathode material has been prepared using the co-precipitation method. The synthesized LiCoO2 powder is characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The XRD studies show that the layered material has a α-NaFeO2 structure with high crystallinity and property of high direction-oriented growth. The SEM confirms that the synthesized LiCoO2 powder is laminated with its shape similar to the layered structure of the natural shells. At a current of 0.2C rate and 3 - 4.2 V, the initial charge and discharge capacity of 156 and 145mAh·g-1 can be obtained. The capacity of 143mAh·g-1 is retained at the end of 30 charge– discharge cycles with the capacity retention of 99%. The charge-discharge curves at various rates have demonstrated that the laminated LiCoO2 powders have an excellent rate performance and cycling stability.
layered structure; LiCoO2; cathode material
This work is financially supported by the Natural Science Foundation of China under approval No. 20671031.
[1] J. G. Lee, T. G. Kim, B. Park, Mater. Res. Bull., 42, 1201 (2007).
[2] C. L. Liao, Y. H. Lee, K. Z. Fung, J. Alloys Compd., 436, 303 (2007).
[3] M. Matsui, K. Dokko, K. Kanamura, J. Power Sources, 177, 184 (2008).
[4] Y. M. Lee, D. H. Ko, J. Y. Lee, J. K. Park, Electrochim. Acta, 52, 1582 (2006).
[5] T. Fang, J. G. Duh. Surf.Coat.Technol., 201, 1886 (2006).
[6] J. N. Reimers, J. R. Dahn, J. Electrochem. Soc., 139, 2091 (1992).
[7] Y. K. Sun, I. H. Oh, S. A. Hong. J. Mater. Sci., 31, 3617 (1996).
[8] M. Tabuchi, K. Ado, H. Kobayashi, H. Sakaebe, H. Kageyama, C. Masquelier, M. Yonemura, A. J. Hirano, Mater. Chem., 9, 199 (1999).
[9] C. H. Han, P. Y. Yeh. J. Mater. Chem., 10, 599 (2000).
[10] J. Ying, C. Jiang, C. Wan, J. Power Sources, 129, 264 (2004).
[11] N. Li, C. J. Patrissi, G. Che, C. R. Martin, J. Electrochem. Soc., 147, 2044 (2000).
[12] Y. X. Gu, D. R. Chen, X. L. Jiao, J. Phys. Chem B, 109, 17901 (2005).
[13] H. Wang, Y.-H. Jang, B. Huang, D. R. Sadoway,Y.-M. Chiang, J. Electrochem. Soc., 146, 473 (1999).
[14] S. M. Lala, L. A. Montoro, J. M. Rosolen, J. Power Sources, 124, 118 (2003).
[15] T. Kawamura, M. Makidera, S. Okada, J. I. Yamaki, J. Power Sources, 146, 27 (2005).
[16] Anjuli T. Appapillai, Azzam N. Mansour, Jaephil Cho, Yang Shao-Horn, Chem. Mater., 19, 5748 (2007).
[17] W. J. Clegg, K. Kendall, N. M. Alford. Nature, 347, 445 (1990).
[18] A. Rougier, P. Gravereau, C. Delmas, J. Electrochem. Soc., 143, 1168 (1996).
[19] R. J. Gummow, M. M. Thackeray, W. I. F. David, Res. Bull., 27, 317 (1992).
[20] S. T. Myung, N. Kumagai, S. Komaba, H. T. Chung, J. Appl. Electrochem., 30, 1081 (2000).
[21] J. R. Dahn, U. von Sacken, C. A. Michal, Solid State Ionics, 44, 87 (1990).
[22] J. N. Reimers, E. Rossen, C. D. Jones, J. R. Dahn, Solid State Ionics, 61, 335 (1993).
[23] M. J. Zou, M. Yoshio, S. Gopukumar, J. I. Yamaki, Electrochem. Solid State Lett., 7, A176 (2004).
[24] K. M. Shaju, G. V. Subba Rao and B. V. R. Chowdari, Electrochim. Acta, 48, 145 (2002).
[25] K. Du, H. Zhang, L. Qi, Electrochimica Acta, 50, 211 (2004).
[26] M. K. Jo, Y. S. Hong, J. B. Choo, J. P. Cho, J. Electrochemical Society, 156, A430 (2009).