- Title
- Thermal lithiation of manganese dioxide: effect of low lithium concentration (x ≤ 0.3 in Li xMnO 2) on structure and electrochemical performance
- Creator
- Lehr, Joshua; Dose, Wesley M.; Yakovleva, Marina; Donne, Scott W.
- Relation
- Journal of the Electrochemical Society Vol. 159, Issue 6, p. A904-A908
- Publisher Link
- http://dx.doi.org/10.1149/2.115206jes
- Publisher
- Electrochemical Society
- Resource Type
- journal article
- Date
- 2012
- Description
- The effect of lithium concentration on LixMnO2 (x ≤ 0.3) materials prepared by co-precipitation/heating is investigated. Lithium concentration determines the phase formed, with three different phases identified in the concentration range. Low levels of lithiation (x = 0.08) leads to the formation of a γ/β type MnO2 material. As the lithium concentration is increased to x = 0.15, a lithiated γ−MnO2 like phase is formed. Finally, at x = 0.28 tunnel structured monoclinic MnO2 is obtained. Increasing the concentration of lithium inhibits the formation of the undesired inactive Mn2O3 phase, which is formed upon heat-treatment of MnO2. At a 5 mA/g charge/discharge rate the monoclinic Li0.28MnO2 material gave the best performance, while at 30 mA/g the Li0.08MnO2 material proved superior.
- Subject
- lithium-ion; rechargeable batteries; manganese dioxide; Mn02
- Identifier
- http://hdl.handle.net/1959.13/1054721
- Identifier
- uon:15793
- Identifier
- ISSN:0013-4651
- Rights
- © The Electrochemical Society, Inc. 2012. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in Journal of the Electrochemical Society, Vol. 159, No. 6, pp. A904-A908.
- Language
- eng
- Reviewed
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