Skip to content

Research at St Andrews

Transport properties of multi-cations doped cerium oxide

Research output: Contribution to journalArticle

Author(s)

Elena Konysheva, John Thomas Sirr Irvine

School/Research organisations

Abstract

The transport properties of members of the solid solution (100 - x)CeO2·xLa0.6Sr0.4CoO3 (CexLSC), where x = 5, 7.6, and 10.6 mol% have been investigated under oxidising and mildly reduce atmospheres. The single phase solid solutions CexLSC have fluorite-type structure (space group ) with Ce replaced by La, Sr, and Co. The unit cell volume expands with increasing degree of substitution. The CexLSC compositions exhibit thermally activated conductivity behaviour over a temperature range of 150-900 °C. The bulk conductivity increases up to 5-6 orders of magnitudes. In contrast to the undoped CeO2, the grain boundary conductivity determines the transport properties of the CexLSC solid solutions only below 200 °C. The total conductivity of the CexLSC compositions with x > 5 mol% seems to be enhanced due to the increase in the concentration of oxygen vacancies and the emergence of the hole charge carriers. Results obtained in the present study demonstrate that the fabrication method does not greatly influence the transport properties of the CexLSC solid solutions.
Close

Details

Original languageEnglish
Pages (from-to)27 - 30
JournalSolid State Ionics
Volume184
Issue number1
DOIs
Publication statusPublished - 2011

    Research areas

  • Bulk conductivity and grain boundary conductivity, Multi-cation doped cerium oxide, Fluorite-type structure

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. Interface formation and Mn segregation of directly assembled La0.8Sr0.2MnO3 cathode on Y2O3-ZrO2 and Gd2O3-CeO2 electrolytes of solid oxide fuel cells

    He, S., Chen, K., Saunders, M., Quadir, Z., Tao, S., Irvine, J. T. S., Cui, C. Q. & Jiang, S. P., 1 Nov 2018, In : Solid State Ionics. 325, p. 176-188 13 p.

    Research output: Contribution to journalArticle

  2. Ionic conductivity in multiply substituted ceria-based electrolytes

    Coles-Aldridge, A. V. & Baker, R. T., Mar 2018, In : Solid State Ionics. 316, p. 9-19 11 p.

    Research output: Contribution to journalArticle

  3. Metal-oxide interactions for infiltrated Ni nanoparticles on A-site deficient LaxSr1 − 3x/2TiO3

    Hui, J., Neagu, D., Miller, D. N., Yue, X., Ni, C. & Irvine, J. T. S., Feb 2018, In : Solid State Ionics. 315, p. 126-130 5 p.

    Research output: Contribution to journalArticle

  4. Wet chemical synthesis and characterisation of Ba0.5Sr0.5Ce0.6Zr0.2Gd0.1Y0.1O3 − δ proton conductor

    Naeem Khan, M., Savaniu, C. D., Azad, A. K., Hing, P. & Irvine, J. T. S., May 2017, In : Solid State Ionics. 303, p. 52-57 6 p.

    Research output: Contribution to journalArticle

  5. Flux investigations on composite (La0.8Sr0.2)0.95Cr0.5Fe0.5O3 − δ–Sc0.198Ce0.012Zr0.789O1.90 oxygen transport membranes

    Dehaney-Steven, Z. A., Papargyriou, D. & Irvine, J. T. S., May 2016, In : Solid State Ionics. 288, p. 338-341 4 p.

    Research output: Contribution to journalArticle

ID: 6326366

Top