Home > Research > Publications & Outputs > Influence of microstructure and applied current...

Research

Electronic data

  • Revised_Manuscript_Clean_unmarked_FINAL_version_

    Rights statement: This is the author’s version of a work that was accepted for publication in International Journal of Hydrogen Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Hydrogen Energy, 47, 35, 2022 DOI: 10.1016/j.ijhydene.2022.03.056

    Accepted author manuscript, 1.48 MB, PDF document

    Available under license: CC BY-NC-ND: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License

Links

Text available via DOI:

Keywords

View graph of relations

Influence of microstructure and applied current on the electrical conductivity of SmBaCo2O5+d cathode in solid oxide fuel cell

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Published
  • Kyeong Eun Song
  • Jae Woong Lee
  • Yu Ri Lim
  • Seung Wook Baek
  • Tae Ho Shin
  • Shinku Lee
  • Harald Schlegl
  • Jung Hyun Kim
Close
More...
<mark>Journal publication date</mark>26/04/2022
<mark>Journal</mark>International Journal of Hydrogen Energy
Issue number35
Volume47
Number of pages12
Pages (from-to)15875-15886
Publication StatusPublished
<mark>Original language</mark>English

Abstract

In this study, the electrical conductivity of SmBaCo2O5+d (SBCO) is measured and analyzed with respect to the microstructure of the analyzed samples. The microstructure is influenced by the sintering temperature and by the precise composition of the composite cathode. Difference in the electrical conductivity at different applied current is investigated. The value of the electrical conductivity of SBCO sintered at 1150 °C was about 1024 S/cm at 600 °C, which was the highest compared to other samples sintered at lower temperatures. The electrical conductivities of porous microstructural SBCO sintered at 1150 °C with an addition of 10 wt% carbon black and of a composite cathode comprised of SBCO and Ce0.9Gd0.1O2 (CGO91) at a ratio of 1.9:0.1 were 256 and 525 S/cm at 600 °C. The electrical conductivities of SBCO samples increase when relatively low currents are applied. This trend can be observed at all pure SBCO and samples mixed with carbon black. However, these properties are not found in composite cathodes comprised of SBCO and CGO91.

Bibliographic note

This is the author’s version of a work that was accepted for publication in International Journal of Hydrogen Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Hydrogen Energy, 47, 35, 2022 DOI: 10.1016/j.ijhydene.2022.03.056