M.L. Tate
Synthesis and characterisation of new Bi(iii)-containing apatite-type oxide ion conductors: the influence of lone pairs
Tate, M.L.; Fuller, C.A.; Avdeev, M.; Brand, H.E.A.; McIntyre, G.J.; Radosavljevic Evans, I.
Authors
C.A. Fuller
M. Avdeev
H.E.A. Brand
G.J. McIntyre
I. Radosavljevic Evans
Contributors
Professor Ivana Evans ivana.radosavljevic@durham.ac.uk
Other
Abstract
Lone-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.
Citation
Tate, M., Fuller, C., Avdeev, M., Brand, H., McIntyre, G., & Radosavljevic Evans, I. (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. https://doi.org/10.1039/c7dt02871g
Journal Article Type | Article |
---|---|
Acceptance Date | Sep 3, 2017 |
Online Publication Date | Sep 4, 2017 |
Publication Date | Sep 4, 2017 |
Deposit Date | Oct 10, 2017 |
Publicly Available Date | Mar 29, 2024 |
Journal | Dalton Transactions |
Print ISSN | 1477-9226 |
Electronic ISSN | 1477-9234 |
Publisher | Royal Society of Chemistry |
Peer Reviewed | Peer Reviewed |
Volume | 46 |
Issue | 37 |
Pages | 12494-12499 |
DOI | https://doi.org/10.1039/c7dt02871g |
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(958 Kb)
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