Szczegóły publikacji
Opis bibliograficzny
Physicochemical properties of rock salt-type ordered $Sr_{2}MMoO_{6}$ (M=Mg, Mn, Co, Ni) double perovskites / Kun ZHENG, Konrad ŚWIERCZEK // Journal of the European Ceramic Society ; ISSN 0955-2219. — Tytuł poprz.: International Journal of High Technology Ceramics. — 2014 — vol. 34 iss. 16, s. 4273–4284. — Bibliogr. s. 4283–4284, Abstr.
Autorzy (2)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 84558 |
|---|---|
| Data dodania do BaDAP | 2014-09-29 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.eurceramsoc.2014.06.032 |
| Rok publikacji | 2014 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of the European Ceramic Society |
Abstract
B-site rock salt-type ordered Sr2MMoO6 (M = Mg, Mn, Fe, Co, Ni) oxides have been systematically investigated in terms of their crystal structure, oxygen non-stoichiometry, transport properties, thermal expansion and chemical stability. Structural evolution on temperature of the studied materials was interpreted on a basis of octahedra rotation, with I4/m -> Fm-3m phase transition. In the case of P2(1)/n -> 14/m transformation recorded for Sr2MnMoO6, a region of coexistence of two phases was observed. The Fe-containing compound was found to possess very high electrical conductivity, around 1000 S cm(-1) in 5 vol.% H-2 in Ar, and small negative Seebeck coefficient. Studies show that Mn- and Fe-containing compounds are stable only in reducing conditions, Co- and Ni-containing ones are stable only in oxidizing conditions, while Sr2MgMoO6 remains stable in a wide range of oxygen partial pressures. Recorded power density of a button-type SOFC with Sr2FeMoO6-based anode was 0.32W cm(-2) at 900 degrees C. (C) 2014 Elsevier Ltd. All rights reserved.
