Skip to content

Research at St Andrews

Investigation of the structural and catalytic requirements for high-performance SOFC anodes formed by infiltration of LSCM

Research output: Contribution to journalArticle

DOI

Author(s)

G Kim, S Lee, JY Shin, G Corre, John Thomas Sirr Irvine, JM Vohs, RJ Gorte

School/Research organisations

Abstract

Composites formed by infiltration of 45 wt % La0.8Sr0.2Cr0.5Mn0.5O3 (LSCM) into a 65% porous yttria-stabilized zirconia (YSZ) scaffold were investigated in order to understand the reasons this material is able to provide excellent anode performance in solid oxide fuel cells (SOFCs). Scanning electron microscopy showed that the LSCM forms a film over the YSZ after calcination at 1473 K but that this film undergoes cracking to expose a long three-phase boundary after reduction at 1073 K. Coulometric titration demonstrated that the reduction of LSCM and La0.8Sr0.2MnO3 occurred over a similar range of P(O-2) and that reduction is the likely cause for film cracking. To achieve low anode impedances in humidified H-2 at 973 K, it was necessary to add a catalyst. The addition of 0.5-1 wt % Pd, Rh, or Ni was sufficient to increase the maximum power density of SOFCs with 60 mu m thick YSZ electrolytes to >500 mW/cm(2) in humidified H-2 at 973 K. The addition of either 1 wt % Fe or 5 wt % ceria also improved power densities but to a lesser extent. Finally, the use of Pt paste as the current collector increased performance to a similar extent as intentionally adding catalyst, showing the importance of using inert materials in electrode testing.
Close

Details

Original languageEnglish
Pages (from-to)B48-B52
JournalElectrochemical and Solid-State Letters
Volume12
Issue number3
DOIs
Publication statusPublished - 2009

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. Activated Lithium-Metal-Oxides as Catalytic Electrodes for Li-O-2 Cells

    Trahey, L., Johnson, C. S., Vaughey, J. T., Kang, S. -H., Hardwick, L. J., Freunberger, S. A., Bruce, P. G. & Thackeray, M. M., 2011, In : Electrochemical and Solid-State Letters. 14, 5, p. A64-A66 3 p.

    Research output: Contribution to journalArticle

  2. H2O2 Decomposition Reaction as Selecting Tool for Catalysts in Li-O-2 Cells

    Giordani, V., Freunberger, S. A., Bruce, P. G., Tarascon, J-M. & Larcher, D., 2010, In : Electrochemical and Solid-State Letters. 13, 12, p. A180-A183 4 p.

    Research output: Contribution to journalArticle

  3. Efficient reduction of CO2 in a solid oxide electrolyzer

    Bidrawn, F., Kim, G., Corre, G., Irvine, J. T. S., Vohs, J. M. & Gorte, R. J., 20 Jun 2008, In : Electrochemical and Solid-State Letters. 11, 9, p. B167-B170 4 p.

    Research output: Contribution to journalArticle

ID: 19818269

Top