Structural effects on the cyclability of the alkaline γ-MnO₂ electrode

Title: Structural effects on the cyclability of the alkaline γ-MnO₂ electrode
Creator: Bailey, Mark R.; Donne, Scott W.
Relation: Electrochimica Acta Vol. 56, Issue 14, p. 5037-5045
Publisher Link: http://dx.doi.org/10.1016/j.electacta.2011.03.095
Publisher: Elsevier
Resource Type: journal article
Date: 2011
Description: The cyclability of manganese dioxide samples with a wide range of initial properties has been investigated using electrochemical methods. Cycling revealed that a common change occurs in all materials irrespective of initial properties, with the discharge behaviour standardised by the tenth cycle. Modeling of the discharge behaviour revealed the steady decline in the capacity with cycling can primarily be assigned to lower potential pyrolusite domains. Furthermore, an examination of chemically reduced and re-oxidised γ-MnO₂ revealed an irreversible expansion of the γ-MnO₂ lattice upon reduction arising from localised buckling of the oxygen framework.
Subject: manganese dioxide; cyclability; rechargeability; structural changes
Identifier: http://hdl.handle.net/1959.13/936594
Identifier: uon:12351
Identifier: ISSN:0013-4686
Language: eng
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