Skip to content

Research at St Andrews

Studies on the perovskite-based La4Srn-4Ti nO3n+2

Research output: Contribution to conferencePaperpeer-review

Author(s)

Jesús Canales-Vázquez, Shawen Tao, Mikhail Patrakeev, John T.S. Irvine, Wuzong Zhou, Jorge Frade

School/Research organisations

Abstract

Perovskite titanates with nominal stoichiometry ABO3+δ are frequently reported in SOFC literature as having O3 stoichiometry. Such phases often exhibit quite interesting properties, but are not stoichiometric and the structural characterisation is usually not rigorous. Here we demonstrate how oxygen excess can be incorporated in a titanate perovskite-based lattice as crystallographic oxygen shears giving rise to the homologous series La4Srn-4TinO3n+2. The layered structure is lost for the n=12 member (La4Sr 6Ti12O38-δ), although the oxygen excess is accommodated within the perovskite framework in randomly distributed short-range linear defects. This compound was studied as potential fuel electrode due to its high total conductivity and stability in the most reducing conditions.

Close

Details

Original languageEnglish
Pages211-216
Number of pages6
Publication statusPublished - 1 Dec 2003
EventMaterials and Technology for Hydrogen Economy - Boston, MA., United States
Duration: 1 Dec 20033 Dec 2003

Conference

ConferenceMaterials and Technology for Hydrogen Economy
CountryUnited States
CityBoston, MA.
Period1/12/033/12/03

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

View graph of relations

Related by author

  1. Enhancing electrochemical CO2 reduction using Ce(Mn,Fe)O2 with La(Sr)Cr(Mn)O3 cathode for high-temperature solid oxide electrolysis cells

    Lee, S., Kim, M., Lee, K. T., Irvine, J. T. S. & Shin, T. H., 12 May 2021, In: Advanced Energy Materials. Early View, 12 p., 2100339.

    Research output: Contribution to journalArticlepeer-review

  2. Durability of La0.20Sr0.25Ca0.45TiO3-based SOFC anodes: identifying sources of degradation in Ni and Pt/ceria co-impregnated fuel electrode microstructures

    Price, R., Weissen, U., Grolig, J. G., Cassidy, M., Mai, A. & Irvine, J. T. S., 8 Apr 2021, In: Journal of Materials Chemistry A. 15 p.

    Research output: Contribution to journalArticlepeer-review

  3. Achieving strong coherency for a composite electrode via one-pot method with enhanced electrochemical performance in reversible solid oxide cells

    Tian, Y., Wang, W., Liu, Y., Naden, A., Xu, M., Wu, S., Chi, B., Pu, J. & Irvine, J. T. S., 19 Mar 2021, In: ACS Catalysis. 11, 6, p. 3704-3714 11 p.

    Research output: Contribution to journalArticlepeer-review

  4. Alkaline modified A-site deficient perovskite catalyst surface with exsolved nanoparticles and functionality in biomass valorisation

    Umar, A., Neagu, D. & Irvine, J. T. S., 1 Mar 2021, In: Biofuel Research Journal. 8, 1, p. 1342-1350 9 p.

    Research output: Contribution to journalArticlepeer-review

  5. Non-stoichiometry, structure and properties of proton-conducting perovskite oxides

    Li, S. & Irvine, J. T. S., Mar 2021, In: Solid State Ionics. 361, 115571.

    Research output: Contribution to journalReview articlepeer-review

ID: 267130140

Top