New Perovskite-Related Structure Family of Oxide-Ion Conducting Materials NdBaInO4

Fujii, Kotaro; Esaki, Yuichi; Omoto, Kazuki; Yashima, Masatomo; Hoshikawa, Akinori; Ishigaki, Tōru; Hester, James

doi:10.1021/cm500776x

Cited by 107 publications

(135 citation statements)

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“…A change in slope is evidenced at temperatures > 500 °C, with the activation energy lowering to 0.71 ± 0.018 eV. At 600 °C the bulk conductivity is comparable to other leading solid oxide electrolyte materials such as Na0.5Bi0.5TiO3 8 , Zr0.92Y0.08O1.96 22 , LAMOX 7 and La0.9Sr0.1Ga0.9Mg0.1O2.9 13 and much greater than perovskite derivatives such as Ba2In2O5 23 and NdBaInO4 24 . NdBaInO4 has an ionic conductivity of  1 x 10 -6 S cm -1 at 600 °C ( Figure 2) although it has recently been shown that it is possible to further enhance the ionic conductivity of NdBaInO4 by substitution of Sr 2+ for Nd 3+ ; Nd0.9Sr0.1BaInO4 has an ionic conductivity of  1 x 10 -4 S cm -1 at 600 °C 25 .…”

Section: Conductivity Of Ba3monbo85mentioning

confidence: 83%

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Oxide Ion Conductivity in the Hexagonal Perovskite Derivative Ba₃MoNbO_8.5

et al. 2016

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Oxide ion conductors are important materials with a range of technological applications and are currently used as electrolytes for solid oxide fuel cells (SOFCs) and solid oxide electrolyser cells (SOECs). Here we report the crystal structure and electrical properties of the hexagonal perovskite derivative Ba3MoNbO8.5. Ba3MoNbO8.5 crystallises in a hybrid of the 9R hexagonal perovskite and palmierite structures. This is a new and so far unique crystal structure that contains a disordered distribution of (Mo/Nb)O6 octahedra and (Mo/Nb)O4 tetrahedra.Ba3MoNbO8.5 shows a wide stability range and exhibits predominantly oxide ion conduction over a pO2 range of 10 -20 -1 atm with a bulk conductivity of 2.2 x 10 -3 S cm -1 at 600 C. The high level of conductivity in a new structure family suggests that further study of hexagonal perovskite derivatives containing mixed tetrahedral and octahedral geometry could open up new horizons in the design of oxygen conducting electrolytes.

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Section: Conductivity Of Ba3monbo85mentioning

confidence: 83%

“…2) which exhibits predominantly oxide ion conductivity over the pO2 range 3.0 x 10 -19 to 3.2 x 10 -11 atm 24 . EMF and conductivity versus oxygen partial pressure measurements, give evidence that oxide ionic conductivity is observed for Ba3MoNbO8.5 over the pO2 range 10 -20 -1 atm at 600 C.…”

Section: Discussionmentioning

confidence: 99%

Oxide Ion Conductivity in the Hexagonal Perovskite Derivative Ba₃MoNbO_8.5

et al. 2016

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“…In search of highly conductive electrolyte materials remains a major task for researchers working on energy materials. [1][2][3][4] In this paper, we report the new phenomenon that an electronic conductor, such as -LiFeO 2 can be converted into an ionic conductor through the formation of a composite with an insulator -LiAlO 2 .…”

Section: Introductionmentioning

confidence: 97%

High Ionic Conductivity in a LiFeO₂–LiAlO₂ Composite Under H₂/Air Fuel Cell Conditions

Lan

Tao

2014

Chemistry A European J

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This version is available at https://strathprints.strath.ac.uk/57676/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.uk condition. This provides a new approach to discover novel ionic conductors from composite materials derived from electronic conductors.

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“…Since the oxide-ion conduction paths in the crystal structure are governed by the cation network, high oxide-ion conduction occurs in a limited number of crystal structure families, such as fluorite-, 24) Discovery of a new structure family of oxide-ion conductors is therefore important for further development. 25) 28) There are many reports of oxide-ion conductors containing Ga 3+ and Ge…”

Section: Introductionmentioning

confidence: 99%

Crystal structure and electrical conductivity of BaR2ZnO5 (R = Sm, Gd, Dy, Ho, and Er)—a new structure family of oxide-ion conductors

Nakamura

Fujii

Niwa

et al. 2018

J. Ceram. Soc. Japan

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. In the present study, we have found a new structure family of oxide-ion conductors, BaY 2 CuO 5 -type (BaCuY 2 O 5 -type) BaR 2 ZnO 5 compounds (R = rare earths). BaR 2 ZnO 5 compounds with a BaY 2 CuO 5 -type structure were found to be good candidates for oxide-ion conductors by the bond-valence method. BaR 2 ZnO 5 compounds (R = Sm, Gd, Dy, Er, and Ho) were synthesized by solid-state reactions, and their electrical conductivities and crystal structures were investigated. Rietveld analyses of BaR 2 ZnO 5 (R = Sm, Gd, Dy, Er, and Ho) using synchrotron X-ray powder diffraction data gave good fitting for the BaY 2 CuO 5 -type structure. BaHo 2 ZnO 5 had the highest total electrical conductivity in air among BaR 2 ZnO 5 compounds (R = Sm, Gd, Dy, Er, Ho). Oxide-ion conduction was confirmed for BaHo 2 ZnO 5 by electrical conductivity measurements conducted under various oxygen partial pressures. Neutron powder diffraction data of BaHo 2 ZnO 5 were analyzed by the Rietveld method, and the oxide-ion conduction paths were investigated by the bond-valence method.

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New Perovskite-Related Structure Family of Oxide-Ion Conducting Materials NdBaInO₄

Cited by 107 publications

References 28 publications

Oxide Ion Conductivity in the Hexagonal Perovskite Derivative Ba₃MoNbO_8.5

Oxide Ion Conductivity in the Hexagonal Perovskite Derivative Ba₃MoNbO_8.5

High Ionic Conductivity in a LiFeO₂–LiAlO₂ Composite Under H₂/Air Fuel Cell Conditions

Crystal structure and electrical conductivity of Ba<i>R</i><sub>2</sub>ZnO<sub>5</sub> (<i>R</i> = Sm, Gd, Dy, Ho, and Er)—a new structure family of oxide-ion conductors

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New Perovskite-Related Structure Family of Oxide-Ion Conducting Materials NdBaInO4

Cited by 107 publications

References 28 publications

Oxide Ion Conductivity in the Hexagonal Perovskite Derivative Ba3MoNbO8.5

Oxide Ion Conductivity in the Hexagonal Perovskite Derivative Ba3MoNbO8.5

High Ionic Conductivity in a LiFeO2–LiAlO2 Composite Under H2/Air Fuel Cell Conditions

Crystal structure and electrical conductivity of Ba<i>R</i><sub>2</sub>ZnO<sub>5</sub> (<i>R</i> = Sm, Gd, Dy, Ho, and Er)—a new structure family of oxide-ion conductors

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New Perovskite-Related Structure Family of Oxide-Ion Conducting Materials NdBaInO₄

Oxide Ion Conductivity in the Hexagonal Perovskite Derivative Ba₃MoNbO_8.5

Oxide Ion Conductivity in the Hexagonal Perovskite Derivative Ba₃MoNbO_8.5

High Ionic Conductivity in a LiFeO₂–LiAlO₂ Composite Under H₂/Air Fuel Cell Conditions