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The morphology as well as the spatially resolved elemental and chemical characterization of 10 mol% gadolinia doped ceria (CGO10) structures prepared by pulsed laser deposition (PLD) technique are investigated by scanning transmission electron microscopy accompanied with electron energy loss spectroscopy and energy dispersive X-ray spectroscopy. A dense, columnar and structurally inhomogeneous CGO10 film, i.e. exhibiting grain size refinement across the film thickness, is obtained in the deposition process. The cerium M4,5 edges, used to monitor the local electronic structure of the grains, indicate apparent variation of the ceria valence state across and along the film. No element segregation to the grain boundaries is detected. These results are discussed in the context of solid oxide fuel cell applications.
Original languageEnglish
JournalApplied Surface Science
Publication date2011
Volume257
Issue12
Pages5341-5346
ISSN0169-4332
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 2

Keywords

  • Solid Oxide Fuel Cells, Fuel Cells and Hydrogen
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