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Kim, Guntae
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Research Interests
  • Solid Oxide Fuel Cells (SOFCs)& SOE, PEMFC, metal-air batteries, Metal-CO2 system, Catalyst for DRM

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Oxygen exchange kinetics of epitaxial PrBaCo(2)O(5+delta) thin films

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Title
Oxygen exchange kinetics of epitaxial PrBaCo(2)O(5+delta) thin films
Author
Kim, GuntaeWang, SJacobson, AJYuan, ZDonner, WChen, CLReimus, LBrodersen, PMims, CA
Keywords
Electrical conductivity relaxation (ECR); Isotope exchange and depth profiling (IEDP); Oxygen exchange kinetics; Rapid surface exchange kinetics
Issue Date
2006-01
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.88, no.2, pp.1 - 3
Abstract
The oxygen exchange kinetics of thin films of the oxygen-deficient double perovskite PrBa Co2 O5+δ (PBCO) have been determined by electrical conductivity relaxation (ECR) and by oxygen-isotope exchange and depth profiling (IEDP). Microstructural studies indicate that the PBCO films, prepared by pulsed laser deposition, have excellent single-crystal quality and epitaxial nature. The ECR and IEDP measurements reveal that the PBCO films have high electronic conductivity and rapid surface exchange kinetics, although the ECR data indicate the presence of two distinct kinetic pathways. The rapid surface kinetics compared with those of other perovskites suggest the application of PBCO as a cathode material in intermediate-temperature solid oxide fuel cells.
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DOI
10.1063/1.2163257
ISSN
0003-6951
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ECHE_Journal Papers
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