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


Dense ceramics with composition Ba(Ce0.7Zr0.2Yb0.1)O3−δ(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.

This is a preview of subscription content, access via your institution.


  1. 1.

    K.S. Knight, Solid State Ionics 145, 275 (2001)

    Article  CAS  Google Scholar 

  2. 2.

    K. Takeuchi, C.K. Loong, J.W. Richardson Jr., J. Guan, S.E. Dorris, and U. Balachandran, Solid State Ionics 138, 63 (2000)

    Article  CAS  Google Scholar 

  3. 3.

    E. Matsushita, Solid State Ionics, 145, 445 (2001)

    Article  CAS  Google Scholar 

  4. 4.

    J. Ranlov, B. Lebech and K. Nielsen, J. Mater. Chem. 5, 743 (1995)

    Article  CAS  Google Scholar 

  5. 5.

    K.S. Knight, Solid State Ionics 127, 43 (2000)

    Article  CAS  Google Scholar 

  6. 6.

    J. Guan, S.E. Dorris, U. Balachandran and M. Liu, Solid State Ionics 100, 45 (1997)

    Article  CAS  Google Scholar 

  7. 7.

    J.T.S. Irvine, D.J.D. Corcoran, A. Lashtabeg and J. Walton, Solid State Ionics 154–155, 447 (2002)

    Article  Google Scholar 

  8. 8.

    M.E. Kompan, Y.M. Baikov, B.A.T. Melekh, and B.Z. Volchek, Solid State Ionics 162–163, 1 (2003)

    Article  CAS  Google Scholar 

  9. 9.

    K. Katahira, Y. Kohchi, T. Shimura and H. Iwahara, Solid State Ionics 138, 91 (2000)

    Article  CAS  Google Scholar 

  10. 10.

    A.C. Larson and R.B. Von Dreele, Report No. LA-UR-86–748, Los Alamos National Laboratory, Los Alamos, NM, 1987.

  11. 11.

    J.S. Bae, W.K. Choo and C.H. Lee, J. Euro. Ceram. Soc. 21, 1779 (2001)

    Article  CAS  Google Scholar 

  12. 12.

    A. Kruth and J.S. Irvine, Solid State Ionics 162–163, 83 (2003)

    Article  CAS  Google Scholar 

  13. 13.

    T. Mono and T. Schober, Solid State Ionics, 91, 155 (1996)

    Article  CAS  Google Scholar 

  14. 14.

    M.W. Lufaso and P.M. Woodward, Acta Cryst. B57, 725 (2001)

    Article  CAS  Google Scholar 

  15. 15.

    T. Yildirim, B. Reisber, T.J. Udovic and D.A. Neumann, Solid State Ionics 145, 429 (2001)

    Article  CAS  Google Scholar 

Download references


This work has benefited from the use of the Intense Pulsed Neutron Source at Argonne National Laboratory. This facility is funded by the U.S. Department of Energy under Contract W-31-109-ENG-38.

Author information



Corresponding author

Correspondence to Yaping Li.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Li, Y., Kolesnikov, A.I., Richardson, J.W. et al. Structure, proton incorporation and transport properties of ceramic proton conductor Ba(Ce0.7Zr0.2Yb0.1)O3−δ. MRS Online Proceedings Library 835, K1.4 (2004).

Download citation