Article ID Journal Published Year Pages File Type
1630440 Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material 2008 5 Pages PDF
Abstract
Two types of spinel cathode powders, LiMn2O4 and LiAl0.1Mn1.9O3.9F0.1, were synthesized by solid-state reaction. X-ray diffraction (XRD) patterns of the prepared samples were identified as the spinel structure with a space group of Fdm. The cubic lattice parameter was determined from least-squares fitting of the XRD data. The LiAl0.1Mn1.9O3.9F0.1 sample showed a little lower initial capacity, but better cycling performance than the LiMn2O4 sample at both room temperature and an elevated temperature. The Vanderbilt method was used to test the electrochemical conductivity of the LiMn2O4 samples. The electrochemical impedance spectroscopy (EIS) method was employed to investigate the electrochemical properties of these spinel LiMn2O4 samples.
Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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