Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 46, Issue 32, Pages 16868-16877Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2021.02.044
Keywords
BaLaInO4; Ruddlesden-popper structure; Oxygen-ion conductivity; Proton conductivity
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The new complex oxides Ba1.1La0.9In0.95Ti0.05O3.98 show a significant increase in protonic conductivity through doping, making them promising for practical applications.
The new complex oxides Ba1.1La0.9In0.9Ti0.1InO4 and Ba1.1La0.9In0.95Ti0.05O3.98 with Ruddlesden-Popper structure were obtained for the first time. Ba2} and Ti4}- co-doping of B?LaInO4 both with and without change in the oxygen stoichiometry led to an increase in oxygen-ionic and protonic conductivity. It was proved that both factors (geometric and defect concentration) effect the ionic transport in the block-layered structures. The sample Ba1.1La0.9In0.95Ti0.05O3.98 demonstrates the increase in the protonic conductivity by one order of magnitude and it is -90% proton conductor below 400 ?C. ? 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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