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Abstract
Lanthanum orthoantimonate was synthesized using a solid‐state synthesis method. To enhance the possible protonic conductivity, samples with the addition of 1 mol% Ca in La‐site, were also prepared. The structure was studied by the means of X‐ray diffraction, which showed that both specimens were single phase. The materials crystallized in the space group P2 1 /n. Dilatometry revealed that material expands non‐linearly with the temperature. The nature of this deviation is unknown, however, the calculated linear fraction thermal expansion coefficient was 9.56×10 ‐6 1/K. Electrical properties studies showed that the material is a proton conductor in oxidizing conditions, which was confirmed both by temperature studies in wet in dry air, but also by the H/D isotope exchange experiment. The conductivity was rather modest, peaking at order 10 ‐6 S/cm at 800°C, but this can be further improved by microstructure and doping optimization. This is the first time when protonic conductivity in lanthanum orthoantimonates is reported.
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- Accepted or Published Version
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- Copyright (2021 Wiley‐VCH GmbH)
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
CHEMISTRY-A EUROPEAN JOURNAL
no. 27,
pages 5393 - 5398,
ISSN: 0947-6539 - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Winiarz P., Mielewczyk-Gryń A., Dzierzgowski K., Gazda M., Wachowski S.: High temperature proton conduction in LaSbO4// CHEMISTRY-A EUROPEAN JOURNAL -Vol. 27,iss. 17 (2021), s.5393-5398
- DOI:
- Digital Object Identifier (open in new tab) 10.1002/chem.202004561
- Verified by:
- Gdańsk University of Technology
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