Skip to content

Research at St Andrews

The reduction properties of M-doped (M=Zr, Gd) CeO2/YSZ scaffolds co-infiltrated with nickel

Research output: Contribution to journalArticlepeer-review

DOI

Author(s)

R. C. Maher, G. Kerherve, D. J. Payne, X. Yue, P. A. Connor, J. Irvine, L. F. Cohen

School/Research organisations

Abstract

In recent years infiltration of materials into porous ceramic scaffolds has been shown to be an effective way of creating catalytically active components for solid oxide fuel cells (SOFCs). However, the redox properties of these novel structures are not well understood. Here, we use X-ray photoelectron spectroscopy (XPS) and in-situ Raman spectroscopy to investigate the oxidation properties of yttria-stabilised zirconia (YSZ) scaffolds infiltrated with ceria (CeO2), gadolinium-doped ceria (GDC) and zirconia-doped ceria (ZDC), with and without Ni. XPS shows that doping ceria with zirconia increases the ratio of Ce3+ to Ce4+, while gadolinium doping results in a decrease of Ce3+. The presence of Ni increases the Ce3+/Ce4+ ratio for CeO2 and GDC, but had little effect on ZDC. We used the shift of the F2g Raman peak to monitor in-situ, the oxidation state of ceria. In the as-made compounds, we show that while the gadolinium and zirconium dopants significantly change the oxidation characteristics of ceria, the resulting materials are only significantly reduced above 500 °C when co-infiltrated with Ni. In-situ Raman monitoring during reduction as a function of temperature showed that while ZDC reduces much more readily than undoped ceria or GDC, the presence of Ni dominated the reduction dynamics.
Close

Details

Original languageEnglish
Pages (from-to)2045-2052
JournalEnergy Technology
Volume6
Issue number10
Early online date11 Sep 2018
DOIs
Publication statusE-pub ahead of print - 11 Sep 2018

    Research areas

  • In-situ Raman, SOFC, Ceria, Infiltration, Reduction

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

View graph of relations

Related by author

  1. Tailoring SOFC electrode microstructures for improved performance

    Connor, P. A., Yue, X., Savaniu, C. D., Price, R., Triantafyllou, G., Cassidy, M., Kerherve, G., Payne, D. J., Maher, R. C., Cohen, L. F., Tomov, R. I., Glowacki, B. A., Kumar, R. V. & Irvine, J. T. S., 16 Aug 2018, In: Advanced Energy Materials. 8, 23, 1800120.

    Research output: Contribution to journalArticlepeer-review

  2. A Ce/Ru codoped SrFeO3−δ perovskite for a coke-resistant anode of a symmetrical solid oxide fuel cell

    Li, B., He, S., Li, J., Yue, X., Irvine, J. T. S., Xie, D., Ni, J. & Ni, C., 18 Dec 2020, In: ACS Catalysis. 10, 24, p. 14398-14409 12 p.

    Research output: Contribution to journalArticlepeer-review

  3. High oxide ion and proton conductivity in a disordered hexagonal perovskite

    Fop, S., McCombie, K. S., Wildman, E. J., Skakle, J. M. S., Irvine, J. T. S., Connor, P. A., Savaniu, C., Ritter, C. & Mclaughlin, A. C., Jul 2020, In: Nature Materials. 19, 7, p. 752–757 7 p.

    Research output: Contribution to journalArticlepeer-review

  4. Nanostructured perovskite solar cells

    McDonald, C., Ni, C., Maguire, P., Connor, P., Irvine, J. T. S., Mariotti, D. & Svrcek, V., 18 Oct 2019, In: Nanomaterials. 9, 10, 28 p., 1481.

    Research output: Contribution to journalReview articlepeer-review

  5. Development of alternative fuel electrodes for upgrading biogas through CO2

    Zhang, N., Tian, Y., Yue, X., Sammes, L. & Irvine, J., 8 Sep 2019, Solid Oxide Fuel Cells 16, SOFC XVI. Eguchi, K. & Singhal, S. C. (eds.). Electrochemical Society, Inc., p. 2507-2515 9 p. (ECS Transactions; vol. 91, no. 1).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

Related by journal

  1. A new high-performance proton-conducting electrolyte for next-generation solid oxide fuel cells

    Radenahmad, N., Afif, A., Abdalla, A. M., Saqib, M., Park, J-Y., Zaini, J., Irvine, J., Hyun Kim, J. & Azad, A. K., 24 Jul 2020, In: Energy Technology. Early View, 2000486.

    Research output: Contribution to journalArticlepeer-review

  2. Role of nitrogen-doped carbon nanofibers inside polymer membranes for enhancing fuel cell performance

    Jang, J., Lee, J. G., Hwang, H. J., Kwon, O., Jeon, O. S., Ji, Y. & Shul, Y. G., 14 Jun 2018, In: Energy Technology. 6, 6, p. 998-1002 5 p.

    Research output: Contribution to journalArticlepeer-review

  3. Organic semiconductor g-C3N4 modified TiO2 nanotube arrays for enhanced photoelectrochemical performance in wastewater treatment

    Liu, L., Zhang, G., Irvine, J. T. S. & Wu, Y., Jul 2015, In: Energy Technology. 3, p. 982-988

    Research output: Contribution to journalArticlepeer-review

ID: 255918061

Top