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Title: Oxygen Exchange Kinetics of Epitaxial PrBaCo2O5+delta Thin Films

Abstract

The oxygen exchange kinetics of thin films of the oxygen-deficient double perovskite PrBaCo{sub 2}O{sub 5+{delta}} (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.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
914240
Report Number(s):
BNL-78808-2007-JA
Journal ID: ISSN 0003-6951; APPLAB; TRN: US200809%%113
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Appl. Phys. Lett.; Journal Volume: 88; Journal Issue: 2
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; CATHODES; DEPOSITION; ELECTRIC CONDUCTIVITY; KINETICS; LASERS; OXYGEN; PEROVSKITE; PEROVSKITES; RELAXATION; SOLID OXIDE FUEL CELLS; THIN FILMS; national synchrotron light source

Citation Formats

Kim,G., Wang, S., Jacobson, A., Yuan, Z., Donner, W., Chen, C., Reimus, L., Brodersen, P., and Mims, C. Oxygen Exchange Kinetics of Epitaxial PrBaCo2O5+delta Thin Films. United States: N. p., 2006. Web. doi:10.1063/1.2163257.
Kim,G., Wang, S., Jacobson, A., Yuan, Z., Donner, W., Chen, C., Reimus, L., Brodersen, P., & Mims, C. Oxygen Exchange Kinetics of Epitaxial PrBaCo2O5+delta Thin Films. United States. doi:10.1063/1.2163257.
Kim,G., Wang, S., Jacobson, A., Yuan, Z., Donner, W., Chen, C., Reimus, L., Brodersen, P., and Mims, C. Sun . "Oxygen Exchange Kinetics of Epitaxial PrBaCo2O5+delta Thin Films". United States. doi:10.1063/1.2163257.
@article{osti_914240,
title = {Oxygen Exchange Kinetics of Epitaxial PrBaCo2O5+delta Thin Films},
author = {Kim,G. and Wang, S. and Jacobson, A. and Yuan, Z. and Donner, W. and Chen, C. and Reimus, L. and Brodersen, P. and Mims, C.},
abstractNote = {The oxygen exchange kinetics of thin films of the oxygen-deficient double perovskite PrBaCo{sub 2}O{sub 5+{delta}} (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.},
doi = {10.1063/1.2163257},
journal = {Appl. Phys. Lett.},
number = 2,
volume = 88,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}