Synthesis of spinel LiMn2O4 nanoparticles through one-step hydrothermal reaction

Authors

C. H. Jiang, National Institute of Advanced Industrial Science and TechnologyFollow
S X. Dou, University of WollongongFollow
Hua-Kun Liu, University of WollongongFollow
M. Ichihara, University of Tokyo
H. S. Zhou, National Institute of Advanced Industrial Science and Technology

RIS ID

19945

Publication Details

Jiang, C., Dou, S. X., Liu, H. K., Ichihara, M. & Zhou, H. (2007). Synthesis of spinel LiMn2O4 nanoparticles through one-step hydrothermal reaction. Journal of Power Sources, 172 (1), 410-415.

Abstract

Phase pure spinel LiMn2O4 nanoparticles can be directly synthesized by one-step hydrothermal reaction of a3-MnO2 with LiOH in an initial Li/Mn ratio of 1 at 200 ~aDegreesC. The reaction might involve a redox reaction between Mn4+ and OH, and the formation of LiMn2O4 at the same time under the proposed hydrothermal conditions. This hydrothermal process is simple since only a3-MnO2 powders are used as the Mn source, whereas without use of any oxidants, reductants, or low valence Mn source. The electrochemical performance of the as-synthesized LiMn2O4 nanoparticles towards Li+ insertion/extraction was examined. Rather good capacity and cycle performance, and an especially excellent high rate capability, were observed for the sample that was hydrothermally reacted for 3 days.