MEMS-based thin-film solid-oxide fuel cells

Jihwan An, Joon Hyung Shim, Young Beom Kim, Joong Sun Park, Wonyoung Lee, Turgut M. Gür, Fritz B. Prinz

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Thin-film solid-oxide fuel cells (TF-SOFCs) fabricated using microelectromechanical systems (MEMS) processing techniques not only help lower the cell operating temperature but also provide a convenient platform for studying cathodic losses. Utilizing these platforms, cathode kinetics can be enhanced dramatically by engineering the microstructure of the cathode/electrolyte interface by increasing the surface grain-boundary density. Nanoscale secondary ion mass spectrometry and high-resolution transmission electron microscopy studies have shown that oxygen exchange at electrolyte surface grain boundaries is facilitated by a high population of oxide-ion vacancies segregating preferentially to the grain boundaries. Furthermore, three-dimensional structuring of TF-SOFCs enabled by various lithography methods also helps increase the active surface area and enhance the surface exchange reaction. Although their practical prospects are yet to be verified, MEMS-based TF-SOFC platforms hold the potential to provide high-performance for low-temperature SOFC applications.

Original languageEnglish
Pages (from-to)798-804
Number of pages7
JournalMRS Bulletin
Volume39
Issue number9
DOIs
Publication statusPublished - 2014 Jan 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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  • Cite this

    An, J., Shim, J. H., Kim, Y. B., Park, J. S., Lee, W., Gür, T. M., & Prinz, F. B. (2014). MEMS-based thin-film solid-oxide fuel cells. MRS Bulletin, 39(9), 798-804. https://doi.org/10.1557/mrs.2014.171