Characteristics of oxygen reduction on nanocrystalline YSZ

H. Huang, Joon Hyung Shim, C. C. Chao, R. Pornprasertsuk, M. Sugawara, T. M. Gür, F. B. Prinz

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Abstract

We present a series of experimental results indicating improved oxygen reduction characteristics on nanocrystalline yttria-stabilized zirconia (YSZ) surfaces. We compare (i) cathodic interface impedances on nanocrystalline and microcrystalline YSZ, (ii) oxygen exchange rate on and bulk diffusivity in nano- and single-crystal YSZ, and (iii) bulk and surface conductivities of nano-YSZ. The results collectively indicate that the oxygen reduction/exchange rate is faster on nanocrystalline YSZ than on micro- and single-crystal YSZ, which likely is related to fast oxygen or electronic transport on the surface.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume156
Issue number3
DOIs
Publication statusPublished - 2009 Feb 9
Externally publishedYes

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ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

Cite this

Huang, H., Shim, J. H., Chao, C. C., Pornprasertsuk, R., Sugawara, M., Gür, T. M., & Prinz, F. B. (2009). Characteristics of oxygen reduction on nanocrystalline YSZ. Journal of the Electrochemical Society, 156(3). https://doi.org/10.1149/1.3058597