ANSTO Publications Online >
Journal Publications >
Journal Articles >
Please use this identifier to cite or link to this item:
|Title: ||Electrochemical characterization of an aqueous lithium rechargeable battery: the effect of CeO2 additions to the MnO2 cathode.|
|Authors: ||Minakshi, M|
|Keywords: ||Battery Charging|
Battery Charge State
|Issue Date: ||24-Jun-2009|
|Citation: ||Minakshi, M., Nallathamby, K., & Mitchell, D. R. G. (2009). Electrochemical characterization of an aqueous lithium rechargeable battery: the effect of CeO2 additions to the MnO2 cathode. Journal of Alloys and Compounds, 479(1-2), 87-90.|
|Abstract: ||The effect of CeO2 additions on an aqueous rechargeable lithium battery has been investigated. The CeO2 additions (0, 2, and 5 wt.%) were made to the manganese dioxide (MnO2) cathode of a cell comprising zinc as an anode and an aqueous saturated lithium hydroxide solution as the electrolyte. The CeO2 enhances the performance of the cell in terms of capacity and resistance to capacity fade with cycling. This effect is only evident after the first charge cycle. The mechanism by which this occurs may be due to suppression of the oxygen evolution reaction during charging. This results in full reversion of the products of discharge (principally LixMnO2) to MnO2 during charging, and suppresses the formation of non-rechargeable oxyhydroxides. CeO2 additions of 2 wt.% were found to be most effective, since additions at the 5 wt.% level caused a decrease in capacity during long-term cycling. This could be due to a synchronizing effect. The effect of additions of a rare earth oxide (CeO2) and an alkaline earth oxide (CaO) on the electrochemical behavior of the cell is also compared and discussed. © 2009, Elsevier Ltd.|
|Appears in Collections:||Journal Articles|
Files in This Item:
There are no files associated with this item.
Items in APO are protected by copyright, with all rights reserved, unless otherwise indicated.