Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-14T07:15:10.702Z Has data issue: false hasContentIssue false
  • English
  • Français

Structure, proton incorporation and transport properties of ceramic proton conductor Ba(Ce0.7Zr0.2Yb0.1)O3-δ

Published online by Cambridge University Press:  01 February 2011

Yaping Li ,
Alexander I. Kolesnikov ,
James W. Richardson Jr ,
Chendong Zuo ,
Tae H. Lee  and
U. Balachandran
Yaping Li
Affiliation:
Intense Pulsed Neutron Source Division Energy Technology Division, Argonne National Laboratory Argonne, IL 60439, USA
Alexander I. Kolesnikov
Affiliation:
Intense Pulsed Neutron Source Division Energy Technology Division, Argonne National Laboratory Argonne, IL 60439, USA
James W. Richardson Jr
Affiliation:
Intense Pulsed Neutron Source Division Energy Technology Division, Argonne National Laboratory Argonne, IL 60439, USA
Chendong Zuo
Affiliation:
Intense Pulsed Neutron Source Division Energy Technology Division, Argonne National Laboratory Argonne, IL 60439, USA
U. Balachandran
Affiliation:
Intense Pulsed Neutron Source Division Energy Technology Division, Argonne National Laboratory Argonne, IL 60439, USA
Get access

Abstract

Dense ceramics with composition Ba(Ce0.7Zr0.2Yb0.1)O3-β (BCZY) were synthesized by solid state reactions, and their structures were characterized by Rietveld refinements of time-of-flight (TOF) neutron diffraction data collected for the samples at high-temperature and controlled atmospheres. The structure phase transition from orthorhombic Imma to cubic Pm3m was observed at the temperature between 500 and 700°C and in flowing 100ppm H2/Ar gases. At 900°C, the sample was subsequently exposed to different oxygen partial pressures (pO2, ranging from ∼10−17 to ∼10−23 atm) and water vapor pressures (pH2O) up to ∼0.18 atm. The expansion of lattice parameters of BCZY, instead of following the normally expected relationship with pO2, was actually correlated with the increase of pH2O, implying proton incorporation into the structures. The presence of H-containing species in the structure was confirmed by comparing both inelastic neutron scattering spectra and neutron diffraction data collected for dry and “wet” samples at 10K. The observed vibrational peaks at 104 and 150 meV and absence of a peak around 420 meV indicate the hydrogen occupation in the structure but the absence of any hydroxyl groups (hydrogen covalently bonded to oxygen). Electrical conductivities of BCZY were investigated at different temperatures in both dry and wet conditions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 835: Symposium K – Solid-State Ionics , 2004 , K1.4
Copyright
Copyright © Materials Research Society 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Knight, K.S., Solid State Ionics 145, 275 (2001)Google Scholar
2. Takeuchi, K., Loong, C.K., Richardson, J.W. Jr., Guan, J., Dorris, S.E., and Balachandran, U., Solid State Ionics 138, 63 (2000)Google Scholar
3. Matsushita, E., Solid State Ionics, 145, 445 (2001)Google Scholar
4. Ranlov, J., Lebech, B. and Nielsen, K., J. Mater. Chem. 5, 743 (1995)Google Scholar
5. Knight, K.S., Solid State Ionics 127, 43 (2000)Google Scholar
6. Guan, J., Dorris, S.E., Balachandran, U. and Liu, M., Solid State Ionics 100, 45 (1997)Google Scholar
7. Irvine, J.T.S., Corcoran, D.J.D., Lashtabeg, A. and Walton, J., Solid State Ionics 154–155, 447 (2002)Google Scholar
8. Kompan, M.E., Baikov, Y.M., Melekh, B.A.T., and Volchek, B.Z., Solid State Ionics 162–163, 1 (2003)Google Scholar
9. Katahira, K., Kohchi, Y., Shimura, T. and Iwahara, H., Solid State Ionics 138, 91 (2000)Google Scholar
10. Larson, A.C. and Von Dreele, R.B., Report No. LA-UR-86–748, Los Alamos National Laboratory, Los Alamos, NM, 1987.Google Scholar
11. Bae, J.S., Choo, W.K. and Lee, C.H., J. Euro. Ceram. Soc. 21, 1779 (2001)Google Scholar
12. Kruth, A. and Irvine, J.S., Solid State Ionics 162–163, 83 (2003)Google Scholar
13. Mono, T. and Schober, T., Solid State Ionics, 91, 155 (1996)Google Scholar
14. Lufaso, M.W. and Woodward, P.M., Acta Cryst. B57, 725 (2001)Google Scholar
15. Yildirim, T., Reisber, B., Udovic, T.J. and Neumann, D.A., Solid State Ionics 145, 429 (2001)Google Scholar