Skip to content

Research at St Andrews

High Oxide Ion Conductivity in Non-Stoichiometric Pyrochlores and Fluorites in the Ternary System ZrO2-Gd2O3-TiO2

Research output: Contribution to journalArticle

Author(s)

A. J. Feighery, J. T. S. Irvine, C. Zheng

School/Research organisations

Abstract

The extents of the cubic fluorite and pyrochlore regions in the ternary oxide system ZrO2-Gd2O3-TiO2 have been determined experimentally. AC impedance measurements of single phase fluorite and pyrochlore compositions show high oxide ion conduction in compositions containing 20 mol% TiO2. Resolution of the bulk and grain boundary contributions to the total conductivity show that the bulk ionic conductivity increases with Gd2O3 content up to the stoichiometric composition containing 33.33 mol% Gd2O3 and then decreases upon further addition of the aliovalent dopant. Trends in conductivity as a function of temperature and dopant density are discussed.

Close

Details

Original languageEnglish
Pages (from-to)30-35
Number of pages6
JournalIonics
Volume3
Issue number1-2
Publication statusPublished - Jan 1997

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. An FeNbO4-based oxide anode for a solid oxide fuel cell (SOFC)

    Liu, X., Xie, D., Irvine, J. T. S., Ni, J. & Ni, C., 11 Jan 2020, In : Electrochimica Acta. In press, 135692.

    Research output: Contribution to journalArticle

  2. Oxygen redox activity through a reductive coupling mechanism in the P3-type nickel-doped sodium manganese oxide

    Kim, E. J., Ma, L. A., Duda, L. C., Pickup, D. M., Chadwick, A. V., Younesi, R., Irvine, J. T. S. & Armstrong, R., 6 Jan 2020, In : ACS Applied Energy Materials. Early View

    Research output: Contribution to journalArticle

  3. A B-site doped perovskite ferrate for efficient anode of a solid oxide fuel cell with in situ metal exsolution

    Ni, C., Zeng, Q., He, D., Peng, L., Xie, D., Irvine, J. T. S., Duan, S. & Ni, J., 21 Dec 2019, In : Journal of Materials Chemistry A. 7, 47, p. 26944-26953 10 p.

    Research output: Contribution to journalArticle

  4. Lattice strain-enhanced exsolution of nanoparticles in thin films

    Han, H., Park, J., Nam, S. Y., Choi, G. M., Parkin, S. S. P., Jang, H. M. & Irvine, J. T. S., 1 Dec 2019, In : Nature Communications. 10, 8 p., 1471.

    Research output: Contribution to journalArticle

  5. Hexagonal perovskite related oxide ion conductor Ba3NbMoO8.5: phase transition, temperature evolution of the local structure and properties

    Chambers, M. S., McCombie, K. S., Auckett, J. E., McLaughlin, A. C., Irvine, J. T. S., Chater, P. A., Evans, J. S. O. & Evans, I. R., 28 Nov 2019, In : Journal of Materials Chemistry. 7, 44, p. 25503-25510 8 p.

    Research output: Contribution to journalArticle

Related by journal

  1. Robust doped BaCeO3-δ electrolyte for IT-SOFCs

    Khan, M. N., Azad, A. K., Savaniu, C. D., Hing, P. & Irvine, J. T. S., Sep 2017, In : Ionics. 23, 9, p. 2387-2396 10 p.

    Research output: Contribution to journalArticle

  2. Carbon-air fuel cell development to satisfy our energy demands

    Irvine, J. T. S., Jain, SL., Lakeman, B. & Pointon, KD., Dec 2007, In : Ionics. 13, p. 413 - 416 4 p.

    Research output: Contribution to journalArticle

  3. Thermomechanical and conductivity studies of doped niobium titanates as possible current collector material in the SOFC anode

    Lashtabeg, A., Irvine, J. T. S. & Feighery, AJ., 2003, In : Ionics. 9, p. 220-226 7 p.

    Research output: Contribution to journalArticle

  4. Characterisation of Novel Anodes for Solid Oxide Fuel Cells Based on Oxygen-Excess Perovskite Related Structures

    Canales-Vázquez, J., Zhou, W. & Irvine, J. T. S., 2002, In : Ionics. 8, p. 252-255

    Research output: Contribution to journalArticle

  5. Preparation of Thin Films Using the Tape-Casting Process for Use in the Solid Oxide Fuel Cell

    Jones, F. G. E. & Irvine, J. T. S., Sep 2002, In : Ionics. 8, 5-6, p. 339-343 5 p.

    Research output: Contribution to journalArticle

ID: 47289090

Top