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. 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. In press

    Research output: Contribution to journalArticle

  3. Photo-catalytic hydrogen production over Au/g-C3N4: effect of gold particle dispersion and morphology

    Caux, M., Menard, H., AlSalik, Y. M., Irvine, J. T. S. & Idriss, H., 7 Aug 2019, In : Physical Chemistry Chemical Physics. 21, 29, p. 15974-15987 14 p.

    Research output: Contribution to journalArticle

  4. 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

  5. Using cellulose polymorphs for enhanced hydrogen production from photocatalytic reforming

    Chang, C., Skillen, N., Nagarajan, S., Ralphs, K., Irvine, J. T. S., Lawton, L. & Robertson, P. K. J., 1 Aug 2019, In : Sustainable Energy & Fuels. 3, 8, p. 1971-1975 5 p.

    Research output: Contribution to journalArticle

ID: 279372