Please use this identifier to cite or link to this item: https://apo.ansto.gov.au/dspace/handle/10238/9697
Title: High proton conductivity in Ba5Er2Al2ZrO13, a hexagonal perovskite-related oxide with intrinsically oxygen-deficient layers
Authors: Murakami, T
Hester, JR
Yashima, M
Keywords: Oxides
Layers
Electric conductivity
Electric conductors
Proton conductivity
Perovskites
Temperature range
Issue Date: 15-May-2020
Publisher: American Chemical Society
Citation: Murakami, T., Hester, J. R., & Yashima, M. (2020). High proton conductivity in Ba5Er2Al2ZrO13, a hexagonal perovskite-related oxide with intrinsically oxygen-deficient layers. Journal of the American Chemical Society, 142(27), 11653-11657. doi:10.1021/jacs.0c02403
Abstract: For the development of proton-based electrolytes, high proton conductivity at intermediate temperatures (300–600 °C) is crucial, but the available materials have been confined to a limited number of the structure families, such as cubic perovskites. Herein, we report Ba5Er2Al2ZrO13, a hexagonal perovskite-related oxide, as a new class of proton conductors exhibiting higher conductivities than 10–3 S cm–1 between 300 and 1200 °C. The protons as charge carriers are found to exist in the inherently oxygen-deficient h′ layer of Ba5Er2Al2ZrO13, which are supported by Rietveld analysis of neutron-diffraction data, bond-valence-based energy calculations, and thermogravimetric analysis. Our discovery of a new structure family of proton conductors with the inherently oxygen-deficient h′ layer offers a strategy in designing superior proton conductors based on hexagonal perovskite-related oxides. © 2020 American Chemical Society
Gov't Doc #: 9782
URI: https://doi.org/10.1021/jacs.0c02403
http://apo.ansto.gov.au/dspace/handle/10238/9697
ISSN: 0002-7863
Appears in Collections:Journal Articles

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