Optimization of Lithium Titanate Electrodes for High-Power Cells
- 1 January 2006
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 153 (3), A560-A565
- https://doi.org/10.1149/1.2172535
Abstract
A full-cell mathematical model is used to compare the performance of graphite (LixC6)(LixC6) and lithium titanate (Li4+3xTi5O12)(Li4+3xTi5O12) negative electrodes, with a doped lithium manganese oxide (Liy+0.16Mn1.84O4)(Liy+0.16Mn1.84O4) positive electrode. The cell designs are optimized over electrode thickness and porosity, and several particle sizes are examined for the lithium titanate∕manganese oxide system. Although the graphite-based cell contains a higher specific energy than the titanate-based cell, the latter performs better at high rates (12C)(12C) when submicrometer particle sizes are used for both the positive and negative electrode. In light of this and several life-related advantages possessed by the Li4+3xTi5O12Li4+3xTi5O12 electrode, it is recommended for development as a high-power energy storage system.Keywords
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