Three-dimensional microstructure of high-performance pulsed-laser deposited Ni-YSZ SOFC anodes

David Kennouche, Jongsup Hong, Ho Sung Noh, Ji Won Son, Scott A. Barnett

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The Ni-yttria-stabilized zirconia (YSZ) anode functional layer in solid oxide fuel cells produced by pulsed laser-deposition was studied using three-dimensional tomography. Anode feature sizes of ∼130 nm were quite small relative to typical anodes, but errors arising in imaging and segmentation were shown using a sensitivity analysis to be acceptable. Electrochemical characterization showed that these cells achieved a relatively high maximum power density of 1.4 W cm-2 with low cell resistance at an operating temperature of 600°C. The tomographic data showed anode three-phase boundary density of ∼56 μm-2, more than 10 times the value observed in conventional Ni-YSZ anodes. Anode polarization resistance values, predicted by combining the structural data and literature values of three-phase boundary resistance in an electrochemical model, were consistent with measured electrochemical impedance spectra, explaining the excellent intermediate- temperature performance of these cells. This journal is

Original languageEnglish
Pages (from-to)15249-15255
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume16
Issue number29
DOIs
Publication statusPublished - 2014 Aug 7

Fingerprint

Yttria stabilized zirconia
yttria-stabilized zirconia
Solid oxide fuel cells (SOFC)
Pulsed lasers
pulsed lasers
Anodes
anodes
microstructure
Microstructure
Phase boundaries
cells
sensitivity analysis
solid oxide fuel cells
Pulsed laser deposition
operating temperature
Sensitivity analysis
pulsed laser deposition
Tomography
radiant flux density
tomography

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Kennouche, David ; Hong, Jongsup ; Noh, Ho Sung ; Son, Ji Won ; Barnett, Scott A. / Three-dimensional microstructure of high-performance pulsed-laser deposited Ni-YSZ SOFC anodes. In: Physical Chemistry Chemical Physics. 2014 ; Vol. 16, No. 29. pp. 15249-15255.
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Three-dimensional microstructure of high-performance pulsed-laser deposited Ni-YSZ SOFC anodes. / Kennouche, David; Hong, Jongsup; Noh, Ho Sung; Son, Ji Won; Barnett, Scott A.

In: Physical Chemistry Chemical Physics, Vol. 16, No. 29, 07.08.2014, p. 15249-15255.

Research output: Contribution to journalArticle

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AU - Son, Ji Won

AU - Barnett, Scott A.

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