Jump to main content
Jump to site search

Issue 3, 2015
Previous Article Next Article

Correlation between electroconductive and structural properties of proton conductive acceptor-doped barium zirconate

Author affiliations

Abstract

Various dopants were added to BaZrO3 and the conductivities, the proton concentrations, the site occupancy of the dopants and the change in lattice volume as a result of chemical expansion were investigated. Lanthanide group dopants occupied both the Ba and Zr sites, but the amount of these dopants in the Ba site was too limited to significantly influence the conductivity. The samples doped with Yb, Tm, Er, Y and Ho showed both high proton concentrations and high conductivities, together with a relatively large lattice expansion as a result of hydration. We therefore suggest that, in most instances, the proton concentration, proton conductivity and lattice change as a result of chemical expansion were all correlated in proton conductive acceptor-doped BaZrO3. However, Sc-doped BaZrO3 seemed to be different. Its proton concentration was high, but the conductivity and lattice change as a result of chemical expansion were relatively small. This indicates that the conductivity was strongly related to the lattice expansion resulting from hydration rather than simply the proton concentration.

Graphical abstract: Correlation between electroconductive and structural properties of proton conductive acceptor-doped barium zirconate

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 Oct 2014, accepted on 14 Nov 2014 and first published on 14 Nov 2014


Article type: Paper
DOI: 10.1039/C4TA05701E
Citation: J. Mater. Chem. A, 2015,3, 1243-1250
  •   Request permissions

    Correlation between electroconductive and structural properties of proton conductive acceptor-doped barium zirconate

    D. Han, K. Shinoda, S. Sato, M. Majima and T. Uda, J. Mater. Chem. A, 2015, 3, 1243
    DOI: 10.1039/C4TA05701E

Search articles by author

Spotlight

Advertisements