Effect of Further Calcination on the Phase Structure of LiMn2O4 Prepared by a Solution Combustion Synthesis

Abstract:

Article Preview

In this paper, LiMn2O4 materials were prepared by a solution combustion synthesis method using acetate salts as raw materials and acetic acid as fuel. The effect of further calcination at 500°C and 600°C on the phase structure and composition were investigated. The composition and phase structure are determined by X-ray diffraction (XRD). XRD results indicated that the main phase of the products was LiMn2O4, and there was a trace amount Mn2O3 impurity in the products prepared at 500°C and 600°C. The impurity Mn2O3 in the products prepared at 500°C is increased with increasing calcination time, but the Mn2O3 in the products prepared at 600°C is decreased. The grain sizes of the products prepared at 500°C and 600°C are increased with increasing calcination time, and the grain sizes of the products prepared at 600°C are larger than these of the products prepared at 500°C. The lattice parameters of the products prepared at 500°C and 600°C are smaller than that of LiMn2O4 with perfect crystal, and the lattice parameters of the products are more close to that of LiMn2O4 with perfect crystal.

Info:

Periodical:

Edited by:

Honghua Tan

Pages:

768-771

DOI:

10.4028/www.scientific.net/AMM.66-68.768

Citation:

G. Y. Liu et al., "Effect of Further Calcination on the Phase Structure of LiMn2O4 Prepared by a Solution Combustion Synthesis", Applied Mechanics and Materials, Vols. 66-68, pp. 768-771, 2011

Online since:

July 2011

Export:

Price:

$35.00

[1] N. Oyama, T. Tatsuma, and T. Sato, et al: Nature Vol. 373, 1995, p.598.

[2] J. M. Tarascon, M. Armand: Nature Vol. 414, 2001, p.359.

[3] V.G. Kumar, J.S. Gnanaraj and S. Ben-David, et al: Chem. Mater. Vol. 15, 2003, p.4211.

[4] W.J. Zhou, S.J. Bao and B.L. He, et al: Electrochim. Acta Vol. 51, 2006, p.4701.

[5] S. Chitra, P. Kalayani and T. Mohan, et al: J. Electroceram. Vol. 3-4, 1999, p.433.

[6] M. Jayalakshmi, M. M. Rao and F. Scholz: Langmuir. Vol. 19, 2003, p.8403.

[7] W. S. Yang, G. Zhang and J. Y. Xie, et al: J. Power Sources Vol. 81-82, 1999, p.412.

[8] A. Stein, S. W. Keller and T. E. Mallouk: Science Vol. 259, 1993, p.1558.

[9] G.Y. Liu, J.M. Guo and B. S Wang, et al: Adv. Mater. Res. Vol. 186, 2011, p.7.

[10] C.Z. Lu, G.T.K. Fey: J Phys. Chem. Solids Vol. 67, 2006, p.756.

[11] G.Y. Liu, D.W. Guo and J.M. Guo, et al: Key Eng. Mater. Vols. 368-372, 2008, p.293.

In order to see related information, you need to Login.