In situ XRD and TGA/DTA Study of Multiphase La- and Nd-Substituted Pr2NiO4 under IT-SOFC Cathode Operating Conditions Full article
| Journal |
Journal of Alloys and Compounds
ISSN: 0925-8388 , E-ISSN: 1873-4669 |
||||
|---|---|---|---|---|---|
| Output data | Year: 2023, Volume: 967, Article number : 171693, Pages count : 14 DOI: 10.1016/j.jallcom.2023.171693 | ||||
| Tags | Doped lanthanide nickelates; Cathode material for IT-SOFC; Synchrotron in situ XRD;' Phase separation; Oxygen over-stoichiometry | ||||
| Authors |
|
||||
| Affiliations |
|
Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 075-15-2022-263 |
Abstract:
Promising cathode materials Pr2-x(La/Nd)xNiO4+v (x = 0, 0.5, 1) for intermediate temperature solid oxide fuel cells (IT-SOFC) were synthesized via a Pechini route. The samples were studied by in situ XRD in the conditions close to operating for IT-SOFC cathode. For all the samples a phase inhomogeneity was determined, manifesting itself in the apparent presence of two phases with the same 1st order Ruddlesden-Popper structure. The two phases had different unit cell parameters and slightly different phase transition (sp.gr. Fmmm ↔ I4/mmm) temperatures For the as-synthesized PrNdNiO4+v sample a loss of crystallinity, accompanied by a release of H2, H2O, CO2 and CO gases upon heating in an inert atm., was observed The crystallinity of the sample was recovered upon subsequent heating in an air atm. La- and Nd- doping increased thermal stability of samples compared to the undoped one in air at 700 °C. In situ XRD experiments were supplemented by TGA/DTA measurements performed in the same conditions.
Cite:
Mishchenko D.D.
, Arapova M.V.
, Bespalko Y.N.
, Vinokurov Z.S.
, Shmakov A.N.
In situ XRD and TGA/DTA Study of Multiphase La- and Nd-Substituted Pr2NiO4 under IT-SOFC Cathode Operating Conditions
Journal of Alloys and Compounds. 2023. V.967. 171693 :1-14. DOI: 10.1016/j.jallcom.2023.171693 WOS Scopus РИНЦ AN OpenAlex publication_identifier_short.sciact_skif_identifier_type
In situ XRD and TGA/DTA Study of Multiphase La- and Nd-Substituted Pr2NiO4 under IT-SOFC Cathode Operating Conditions
Journal of Alloys and Compounds. 2023. V.967. 171693 :1-14. DOI: 10.1016/j.jallcom.2023.171693 WOS Scopus РИНЦ AN OpenAlex publication_identifier_short.sciact_skif_identifier_type
Dates:
| Submitted: | Jun 25, 2023 |
| Accepted: | Aug 8, 2023 |
| Published online: | Aug 9, 2023 |
| Published print: | Dec 10, 2023 |
Identifiers:
| Web of science: | WOS:001149316000001 |
| Scopus: | 2-s2.0-85167421596 |
| Elibrary: | 55989886 |
| Chemical Abstracts: | 2023:1661739 |
| OpenAlex: | W4385708499 |
| publication_identifier.sciact_skif_identifier_type: | 1485 |