Skip to content

Research at St Andrews

Novel highly titania doped YSZ anodes for SOFCs

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Author(s)

A Kaiser, AJ Feighery, JTS Irvine

School/Research organisations

Abstract

In the ternary system ZrO2-Y2O3-TiO2 compositions with titania concentrations of 18 mol-% can be dissolved in the cubic fluorite structure. The electrical properties of these compositions close to the high titania, low yttria limit were found to have a predominant ionic conductivity of about 0.01 Scm(-1). Substantial electronic conductivity of about 0.2 Scm(-1) at 930 degrees C is introduced into the system at oxygen pressures below 10(-13) atm. For applications in the SOFC, I-V polarisation studies were performed on anode compositions, screen printed on YSZ electrolytes, using a gold mesh current collector. A low effective contact area of about 20% of the geometrical area suggested that these materials need to be supplemented by a current collecting component. With increasing polarisation of the electrode, the effective contact area decreased due to oxidation of the electrode. However currents, related to the effective contact area were reasonable. By impedance studies the polarisation losses were associated with the electrode and electrolyte resistances, diffusion and charge transfer losses were not very large, perhaps indicating the benefit of an ionically conducting electrode.

Close

Details

Original languageEnglish
Title of host publicationSOLID OXIDE FUEL CELLS (SOFC VI)
EditorsSC Singhal, M Dokiya
Place of PublicationPENNINGTON
PublisherELECTROCHEMICAL SOCIETY INC
Pages541-548
Number of pages8
ISBN (Print)1-56677-242-7
Publication statusPublished - 1999
Event6th International Symposium on Solid Oxide Fuel Cells (SOFC-VI) - HONOLULU
Duration: 17 Oct 199922 Oct 1999

Publication series

NameELECTROCHEMICAL SOCIETY SERIES
PublisherELECTROCHEMICAL SOCIETY INC
Volume99

Conference

Conference6th International Symposium on Solid Oxide Fuel Cells (SOFC-VI)
CityHONOLULU
Period17/10/9922/10/99

    Research areas

  • YTTRIA-STABILIZED ZIRCONIA, OXIDES

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

View graph of relations

Related by author

  1. 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 Apr 2019, In : Nature Communications. 10, 8 p., 1471.

    Research output: Contribution to journalArticle

  2. Oxygen storage capacity and thermal stability of brownmillerite-type Ca2(Al1-xGax)MnO5+δ oxides

    Huang, X., Ni, C. & Irvine, J. T. S., 14 Aug 2019, In : Journal of Alloys and Compounds. 810, 151865.

    Research output: Contribution to journalArticle

  3. 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-T., Irvine, J., Duan, S. & Ni, J-P., 29 Oct 2019, In : Journal of Materials Chemistry. In press

    Research output: Contribution to journalArticle

  4. Nanostructured perovskite solar cells

    McDonald, C., Ni, C., Maguire, P., Connor, P., Irvine, J. T. S., Mariotti, D. & Svrcek, V., 18 Oct 2019, In : Nanomaterials. 9, 10, 28 p., 1481.

    Research output: Contribution to journalArticle

  5. Enhanced cycling performance of magnesium doped lithium cobalt phosphate

    Kim, E. J., Miller, D., Irvine, J. T. S. & Armstrong, A. R., 26 Sep 2019, In : ChemElectroChem. 6, 18

    Research output: Contribution to journalArticle

ID: 47288942

Top