Electrochemical characterization of an aqueous lithium rechargeable battery: the effect of CeO2 additions to the MnO2 cathode

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dc.contributor.authorMinakshi, Men_AU
dc.contributor.authorNallathamby, Ken_AU
dc.contributor.authorMitchell, DRGen_AU
dc.date.accessioned2010-04-07T06:13:37Zen_AU
dc.date.accessioned2010-04-30T05:07:59Zen_AU
dc.date.available2010-04-07T06:13:37Zen_AU
dc.date.available2010-04-30T05:07:59Zen_AU
dc.date.issued2009-06-24en_AU
dc.date.statistics2009-06-24en_AU
dc.description.abstractThe 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.en_AU
dc.identifier.citationMinakshi, 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. doi:10.1016/j.jallcom.2008.12.143en_AU
dc.identifier.govdoc1513en_AU
dc.identifier.issn0925-8388en_AU
dc.identifier.issue1-2en_AU
dc.identifier.journaltitleJournal of Alloys and Compoundsen_AU
dc.identifier.pagination87-90en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.jallcom.2008.12.143en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3087en_AU
dc.identifier.volume479en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectBattery chargingen_AU
dc.subjectLithium hydroxidesen_AU
dc.subjectBattery charge stateen_AU
dc.subjectManganeseen_AU
dc.subjectRare earthsen_AU
dc.subjectAqueous solutionsen_AU
dc.titleElectrochemical characterization of an aqueous lithium rechargeable battery: the effect of CeO2 additions to the MnO2 cathodeen_AU
dc.typeJournal Articleen_AU
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