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The use of low-energy SIMS (LE-SIMS) for nanoscale fuel cell material development
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Morris, R. J. H. (Richard J. H.), Fearn, S., Perkins, J., Kilner, J., Dowsett, M. G., Beigalski, M. D. and Rouleau, C. M. (2011) The use of low-energy SIMS (LE-SIMS) for nanoscale fuel cell material development. Surface and Interface Analysis, Vol.43 (No.1-2). pp. 635-638. doi:10.1002/sia.3526 ISSN 0142-2421.
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Official URL: http://dx.doi.org/10.1002/sia.3526
Abstract
Low-energy secondary ion mass spectrometry has been used to investigate the matrix structure and interface attributes of a novel Ce(0.85)Sm(0.15)O(2)/CeO(2) multilayer fuel cell material. Nanoscale oxide systems have shown enhanced ionic conductivities when produced to form highly oriented epitaxial structures. The Sm-doped CeO(2) material system is of particular interest for fuel cell technology because of its inherently high ionic conductivity at low operating temperatures (600-800 degrees C). For this study, a nanometer-scale Ce(0.85)Sm(0.15)O(2)/CeO(2) multilayer was grown by pulsed laser deposition. The sample was annealed at 700 degrees C in an oxygen ambience. High-resolution, low-energy depth profiling using Cs revealed some diffusion of the multilayer structure after annealing, along with a possible volume change for the Sm-doped layers. Changes in layer volume will lead to an increase in the mechanical strain and may cause the material to crack. The findings presented here suggest that the Ce(0.85)Sm(0.15)O(2)/CeO(2) multilayer structure in its current form may not possess the level of thermal stability required for use within a fuel cell environment.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | Nanotechnology, Layer structure (Solids), Fuel cells, Secondary ion mass spectrometry, Thin films, Multilayered | ||||
Journal or Publication Title: | Surface and Interface Analysis | ||||
Publisher: | John Wiley & Sons Ltd. | ||||
ISSN: | 0142-2421 | ||||
Official Date: | January 2011 | ||||
Dates: |
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Volume: | Vol.43 | ||||
Number: | No.1-2 | ||||
Page Range: | pp. 635-638 | ||||
DOI: | 10.1002/sia.3526 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
Data sourced from Thomson Reuters' Web of Knowledge
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