Metal Oxides as Negative Electrode Materials in Li-Ion Cells
- 1 January 2002
- journal article
- Published by The Electrochemical Society in Electrochemical and Solid-State Letters
- Vol. 5 (6), A115-A118
- https://doi.org/10.1149/1.1472303
Abstract
The electrochemical performance of 3d metal oxide (MO) electrode materials for Li-ion batteries was studied in the form of half-cells. Reversible capacity in the 750-1000 mAh/g range was achieved and sustained over numerous charge-discharge cycles both at room temperature and at 55°C. The studied oxides were then used as negative-electrode active materials to assemble larger plastic Li-ion cells, which exhibited an average output voltage of 2 V and a stable reversible specific energy of 120 Wh/kg during extended cycling at ambient and elevated temperatures. This value can be compared to 180 Wh/kg obtained for similar Li-ion cells. Based on modeling, several scenarios involving material considerations present the optimum method for boosting the energy density of such Li-ion systems. © 2002 The Electrochemical Society. All rights reserved.Keywords
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