Skip to content

Research at St Andrews

Conductivity, catalytic property and electrochemical performance of a new perovskite-type SOFC anode material

Research output: Other contribution

Author(s)

School/Research organisations

Abstract

A perovskite related material, La0.75Sr0.25Cr0.5Fe0.5O3-delta (LSCF), has been synthesised and examined as a potential anode material for solid oxide fuel cells (SOFC). The material exhibits an overall orthorombic structure with a = 5.4926 +/- 0.0005 Angstrom, b = 5.5339 +/- 0.0004 Angstrom, c = 7.7646 +/- 0.0008 Angstrom. V = 236.01 +/- 0.05 Angstrom(3) according to the X-ray data. It is chemically stable under SOFC anode conditions. The conductivity of LSCF at 900degreesC is 14.3 and 0.21 S/cm respectively in air and 5% H-2. An 11% methane conversion was observed at 900degreesC when the steam to methane ratio is 1:1. A methane conversion of 68% with CO2-selectivity of 99% is achieved at 900degreesC when equal molar of CH4 and O-2 were introduced into the reactor. The anode polarisation resistance in wet 5% H-2/Ar and wet H-2 are about 1.79 Omegacm(2) and 1.15 Omegacm(2) respectively at 850degreesC. A fuel cell with a maximum current density of 640 mA/cm(2) was achieved in wet H-2 at 900degreesC. LSCF itself is not an ideal SOFC anode material although it is redox stable in reducing atmosphere at high temperatures and exhibits good catalytic effects for methane-reforming.

Close

Details

Original languageEnglish
Volume2003-07
Publication statusPublished - 2003

    Research areas

  • OXIDE FUEL-CELLS, METHANE, TEMPERATURE, STABILITY, OXIDATION

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

View graph of relations

Related by author

  1. 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

  2. Upscaling of co-impregnated La0.20Sr0.25Ca0.45TiO3 anodes for solid oxide fuel cells: a progress report on a decade of academic-industrial collaboration

    Price, R., Cassidy, M., Grolig, J. G., Longo, G. G., Weissen, U. G., Mai, A. G. & Irvine, J. T. S., 12 Feb 2021, In: Advanced Energy Materials. Early View, 21 p., 2003951.

    Research output: Contribution to journalReview articlepeer-review

  3. Microwave irradiation synthesis to obtain La0.7-xPrxCa0.3MnO3 perovskites: electrical and electrochemical performance

    Ferrel-Alvarez, A. C., Domínguez-Crespo, M. A., Cong, H., Torres-Huerta, A. M., Palma-Ramírez, D. & Irvine, J. T. S., 15 Jan 2021, In: Journal of Alloys and Compounds. 851, 156882.

    Research output: Contribution to journalArticlepeer-review

  4. Graphitic-C3N4 coated floating glass beads for photocatalytic destruction of synthetic and natural organic compounds in water under UV light

    Hui, J., Pestana, C. J., Caux, M., Gunaratne, H. Q. N., Edwards, C., Robertson, P. K. J., Lawton, L. A. & Irvine, J. T. S., 15 Jan 2021, In: Journal of Photochemistry and Photobiology A: Chemistry. 405, 112935.

    Research output: Contribution to journalArticlepeer-review

  5. Activation of anion redox in P3 structure cobalt-doped sodium manganese oxide via introduction of transition metal vacancies

    Kim, E. J., Mofredj, K., Pickup, D., Chadwick, A., Irvine, J. T. S. & Armstrong, R., 1 Jan 2021, In: Journal of Power Sources. 481, 229010.

    Research output: Contribution to journalArticlepeer-review

ID: 279372

Top