Study of the hydration level in proton conducting oxides using neutron diffraction with polarization analysis
Journal article, 2018

We report results from neutron diffraction with polarization analysis of the effect of In dopant level on the hydrogen concentration in hydrated samples of the proton conducting perovskite type oxide BaZr1−xInxO3−x/2with x = 0, 0.175, 0.20, 0.225, 0.25, and 0.275. Analysis of the neutron data establishes a trend of increasing hydrogen concentration, which is comparable to that obtained from thermogravimetric measurements on the same samples, as well as an increased unit-cell size and local structural disorder as a function of increasing In dopant level. These results encourage further use of neutron diffraction with polarization analysis as a non-destructive technique for the determination of the total hydrogen concentration, and structural properties, of proton conducting oxides as well as other hydrogen-containing materials.

Author

Daria Noferini

Chalmers, Physics, Condensed Matter Physics

Institut Laue-Langevin

M. Koza

Institut Laue-Langevin

G. J. Nilsen

Institut Laue-Langevin

Maths Karlsson

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry 2

Solid State Ionics

0167-2738 (ISSN)

Vol. 324 163-167

New insights in hydrogenous materials for energy

Swedish Research Council (VR), 2011-01-01 -- 2016-12-31.

Swedish Research Council (VR), 2011-01-01 -- 2016-12-31.

Mechanistic aspects of local structure and proton dynamics in proton conducting oxides for clean energy applications

Swedish Research Council (VR), 2012-01-01 -- 2014-12-31.

Subject Categories

Inorganic Chemistry

Materials Chemistry

Other Materials Engineering

DOI

10.1016/j.ssi.2018.07.001

More information

Latest update

12/10/2018