Synthesis and characterisation of new Bi (III)-containing apatite-type oxide ion conductors: the influence of lone pairs

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dc.contributor.authorTate, MLen_AU
dc.contributor.authorFuller, CAen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorBrand, HEAen_AU
dc.contributor.authorMcIntyre, GJen_AU
dc.contributor.authorEvans, IRen_AU
dc.date.accessioned2021-03-10T23:25:27Zen_AU
dc.date.available2021-03-10T23:25:27Zen_AU
dc.date.issued2017-09-04en_AU
dc.date.statistics2021-03-09en_AU
dc.description.abstractLone-pair cations are known to enhance oxide ion conductivity in fluorite- and Aurivillius-type materials. Among the apatite-type phases, the opposite trend is found for the more widely studied silicate oxide ion conductors, which exhibit a dramatic decrease in conductivity on Bi(III) incorporation. In this work, the influence of lone-pair cations on the properties of apatite-type germanate oxide ion conductors has been investigated by preparing and characterising seven related compositions with varying Bi(III) content, by X-ray and neutron powder diffraction and impedance spectroscopy. All materials are very good oxide ion conductors (with conductivities of up to 1.29 × 10−2 S cm−1 at 775 °C). Increasing Bi(III) content leads to increases in conductivity by up to an order of magnitude, suggesting significant differences in the oxide-ion conduction mechanisms between lone-pair-containing apatite-type germanate and silicate solid electrolytes. © The Royal Society of Chemistry 2017en_AU
dc.identifier.citationTate, M. L., Fuller, C. A., Avdeev, M., Brand, H. E. A., McIntyre, G. J., & Evans, I. R. (2017). Synthesis and characterisation of new Bi (III)-containing apatite-type oxide ion conductors: the influence of lone pairs. Dalton Transactions, 46(37), 12494-12499. doi:10.1039/C7DT02871Gen_AU
dc.identifier.issn1477-9234en_AU
dc.identifier.issue37en_AU
dc.identifier.journaltitleDalton Transactionsen_AU
dc.identifier.pagination12494-12499en_AU
dc.identifier.urihttps://doi.org/10.1039/C7DT02871Gen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10518en_AU
dc.identifier.volume46en_AU
dc.language.isoenen_AU
dc.publisherRoyal Society of Chemistryen_AU
dc.subjectElectric conductivityen_AU
dc.subjectOxidesen_AU
dc.subjectCationsen_AU
dc.subjectFluoriteen_AU
dc.subjectApatitesen_AU
dc.subjectSilicatesen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectSolid electrolytesen_AU
dc.titleSynthesis and characterisation of new Bi (III)-containing apatite-type oxide ion conductors: the influence of lone pairsen_AU
dc.typeJournal Articleen_AU
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