Skip to content

Research at St Andrews

Advanced Electrochemical Properties of LnBa0.5Sr0.5Co2O5+δ (Ln = Pr, Sm, and Gd) as Cathode Materials for IT-SOFC

Research output: Contribution to journalArticle

DOI

Author(s)

Jung Hyun Kim, Mark Cassidy, John T. S. Irvine, Joongmyeon Bae

School/Research organisations

Abstract

Excellent area-specific-resistance (ASR) values have been exhibited by cathode materials with a Sr-doped layer perovskite type structure and therefore show themselves to be possible candidates for intermediate-temperature-operating solid oxide fuel cell (IT-SOFC, 600-800 degrees C) applications. SmBa0.5Sr0.5Co2O5+delta (SBSCO) electrode was sintered onto 10 mol % gadolinia-doped ceria (Ce0.9Gd0.1O2, CGO91) at 1000 degrees C to form symmetrical cells and exhibited an ASR value of 0.092 Omega cm(2) at 700 degrees C. The lowest ASR value was observed when the composite cathode of 50 wt % of SBSCO and 50 wt % of CGO91 (SBSCO50) was used in conjunction with an interlayer of CGO91 applied between the electrode and 8 mol % Y2O3 stabilized ZrO2 electrolyte. These were 0.12 Omega cm(2) at 600 degrees C and 0.019 Omega cm(2) at 700 degrees C, respectively. The coefficient of thermal expansion (CTE) of SBSCO was 21.9x10(-6) K-1 at 700 degrees C. However, the CTE of the composite cathode of SBSCO50 was shown to be 13.6x10(-6) K-1 at 700 degrees C, this being more compatable with the other components within the cell.

Close

Details

Original languageEnglish
Pages (from-to)B682-B689
Number of pages8
JournalJournal of The Electrochemical Society
Volume156
Issue number6
DOIs
Publication statusPublished - 2009

    Research areas

  • TECHNOLOGY, electrochemical electrodes, PEROVSKITE, barium compounds, samarium compounds, thermal expansion, ZIRCONIA, CONDUCTIVITY, solid oxide fuel cells, gadolinium compounds, PR, ELECTRODES, praseodymium compounds, strontium compounds, OXIDE FUEL-CELLS

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 Dec 2019, In : Nature Communications. 10, 8 p., 1471.

    Research output: Contribution to journalArticle

  2. 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

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

    Huang, X., Ni, C. & Irvine, J. T. S., 25 Nov 2019, In : Journal of Alloys and Compounds. 810, 151865.

    Research output: Contribution to journalArticle

  4. Nanostructured carbons containing FeNi/NiFe2O4 supported over N-doped carbon nanofibers for oxygen reduction and evolution reactions

    Aziz, I., Lee, J. G., Duran, H., Kirchhoff, K., Baker, R. T., Irvine, J. T. S. & Arshad, S. N., 11 Nov 2019, In : RSC Advances. 9, 63, p. 36586-36599 14 p.

    Research output: Contribution to journalArticle

  5. 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

Related by journal

  1. In situ thermal battery discharge using CoS2 as a cathode material

    Payne, J. L., Percival, J. D., Giagloglou, K., Crouch, C., Carins, G. M., Smith, R., Gover, R. & Irvine, J. T. S., 2 Aug 2019, In : Journal of The Electrochemical Society. 166, 12, p. A2660-A2664 5 p.

    Research output: Contribution to journalArticle

  2. Transition metal chlorides NiCl2, KNiCl3, Li6VCl8 and Li2MnCl4 as alternative cathode materials in primary Li thermal batteries

    Giagloglou, K., Payne, J. L., Crouch, C., Gover, R. K. B., Connor, P. A. & Irvine, J. T. S., 14 Nov 2018, In : Journal of The Electrochemical Society. 165, 14, p. A3510-A3516

    Research output: Contribution to journalArticle

  3. Synthesis and electrochemical study of CoNi2S4 as a novel cathode material in a primary Li thermal battery

    Giagloglou, K., Payne, J. L., Crouch, C., Gover, R., Connor, P. A. & Irvine, J. T. S., 25 Jul 2017, In : Journal of The Electrochemical Society. 164, 9, p. A2159-A2163

    Research output: Contribution to journalArticle

ID: 437372

Top