Sodium uptake in cell construction and subsequent in operando electrode behaviour of Prussian blue analogues, Fe[Fe(CN)6]1−x·yH2O and FeCo(CN)6

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dc.contributor.authorPramudita, JCen_AU
dc.contributor.authorSchmid, Sen_AU
dc.contributor.authorGodfrey, Ten_AU
dc.contributor.authorWhittle, Ten_AU
dc.contributor.authorAlam, AKMMen_AU
dc.contributor.authorHanley, TLen_AU
dc.contributor.authorBrand, HEAen_AU
dc.contributor.authorSharma, Nen_AU
dc.date.accessioned2018-09-19T03:45:52Zen_AU
dc.date.available2018-09-19T03:45:52Zen_AU
dc.date.issued2014-07-23en_AU
dc.date.statistics2018-09-18en_AU
dc.description.abstractThe development of electrodes for ambient temperature sodium-ion batteries requires the study of new materials and the understanding of how crystal structure influences properties. In this study, we investigate where sodium locates in two Prussian blue analogues, Fe[Fe(CN)6]1-x·yH2O and FeCo(CN)6. The evolution of the sodium site occupancies, lattice and volume is shown during charge-discharge using in situ synchrotron X-ray powder diffraction data. Sodium insertion is found to occur in these electrodes during cell construction and therefore Fe[Fe(CN)6]1-x·yH2O and FeCo(CN)6 can be used as positive electrodes. NazFeFe(CN)6 electrodes feature higher reversible capacities relative to NazFeCo(CN)6 electrodes which can be associated with a combination of structural factors, for example, a major sodium-containing phase, ∼Na0.5FeFe(CN)6 with sodium locating either at the x = y = z = 0.25 or x = y = 0.25 and z = 0.227(11) sites and an electrochemically inactive sodium-free Fe[Fe(CN)6]1-x·yH2O phase. This study demonstrates that key questions about electrode performance and attributes in sodium-ion batteries can be addressed using time-resolved in situ synchrotron X-ray diffraction studies. © 2014 Royal Society of Chemistry Open Access CC Licenceen_AU
dc.identifier.citationPramudita, J. C., Schmid, S., Godfrey, T., Whittle, T., Alam, M., Hanley, T.,Brand, H. E. A., & Sharma, N. (2014). Sodium uptake in cell construction and subsequent in operando electrode behaviour of Prussian blue analogues, Fe [Fe (CN) 6] 1− x· y H 2 O and FeCo (CN) 6. Physical Chemistry Chemical Physics, 16(44), 24178-24187. doi:10.1039/c4cp02676den_AU
dc.identifier.govdoc8863en_AU
dc.identifier.issn1463-9084en_AU
dc.identifier.issue44en_AU
dc.identifier.journaltitlePhysical Chemistry Chemical Physicsen_AU
dc.identifier.pagination24178-24187en_AU
dc.identifier.urihttps://doi.org/10.1039/c4cp02676den_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9023en_AU
dc.identifier.volume16en_AU
dc.language.isoenen_AU
dc.publisherRoyal Society of Chemistryen_AU
dc.subjectIonsen_AU
dc.subjectBattery charge stateen_AU
dc.subjectCrystal structureen_AU
dc.subjectFerrocyanidesen_AU
dc.subjectSodiumen_AU
dc.subjectCrystal latticesen_AU
dc.subjectElectrodesen_AU
dc.subjectElectrochemical cellsen_AU
dc.subjectX-ray diffractionen_AU
dc.titleSodium uptake in cell construction and subsequent in operando electrode behaviour of Prussian blue analogues, Fe[Fe(CN)6]1−x·yH2O and FeCo(CN)6en_AU
dc.typeJournal Articleen_AU
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