Abstract
Spinel LiMn2−x Ni x O4 compounds doped with a range of Ni (x=0–0.06) were synthesized by a spray-drying method. The structure and morphology characteristics of the powders were studied in detail by means of X-ray diffraction (XRD), scanning electron microscopy, and transmission electron microscopy. The XRD data reveal that all the samples have well-defined spinel structure, but, with the increase in Ni content, the doped lithium manganese spinels have smaller lattice constant. The undoped and doped spinel LiMn2O4 particles are fine, narrowly distributed, and well crystallized. The electrochemical characteristics of the samples are measured in the coin-type cells in a potential range of 3.2–4.35 V vs Li/Li+. All cyclic voltammogram curves exhibit two pairs of redox reaction peaks, but, among them, there are some differences about the peak split. With the increase in the Ni content, the specific capacities of the samples decrease slightly, but their cyclic ability increases.
Similar content being viewed by others
References
Tarascon JM, Wang E, Shokoohi FK, Mckinnon WR, Colson S (1991) J Electrochem Soc 138:2859
Sun YK, Yoon CS, Kim CK, Youn SG, Lee YS, Yoshio M, Oh IH (2001) J Mater Chem 11:2519
Tarascon JM, Guyomard D (1993) Electrochim Acta 38:1221
Pistoia G, Wang G, Wang C (1992) Solid State Ionics 58:285
Huang H, Bruce PG (1995) J Power Sources 54:52
Xia Y, Noguchi H, Yoshio M (1995) J Solid State Chem 119:216
Xia Y, Zhou H, Yoshio M (1997) J Electrochem Soc 144:2593
Yamada A, Tanaka M (1995) Mater Res Bull 30:715
Taniguchi I (2005) Mater Chem Phys 92:172
Kumar G, Schlorb H, Rahner D (2001) Mater Chem Phys 70:117
Yang ST, Jia JH, Ding L, Zhang MC (2003) Electrochim Acta 48:569
Thirunakaran R, Kim K-T, Kang Y-M, Seo C-Y, Jai Y-L (2004) J Power Sources 137:100
Dokko K, Mohamedi M, Anzue N, Itoh T, Uchida I (2002) J Mater Chem 12:3688
Bellitto C, DiMarco MG, Branford WR, Green MA, Neumann DA (2001) Solid State Ionics 140:77
Zhong Q, Bonakdarpour A, Zhang M, Gao Y, Dahn JR (1997) J Electrochem Soc 144:205
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wu, H.M., Tu, J.P., Chen, X.T. et al. Effects of Ni-ion doping on electrochemical characteristics of spinel LiMn2O4 powders prepared by a spray-drying method. J Solid State Electrochem 11, 173–176 (2007). https://doi.org/10.1007/s10008-005-0082-y
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10008-005-0082-y