Szczegóły publikacji
Opis bibliograficzny
Indium doping in $SrCeO_{3}$ proton-conducting perovskites / Wojciech SKUBIDA, Kun ZHENG, Konrad ŚWIERCZEK, Mateusz Michna, Łukasz KONDRACKI // Journal of Solid State Chemistry ; ISSN 0022-4596. — 2020 — vol. 284 art. no. 121210, s. 1–7. — Bibliogr. s. 6–7, Abstr. — Publikacja dostępna online od: 2020-01-22. — K. Zheng i K. Świerczek – dod. afiliacja: AGH Centre of Energy
Autorzy (5)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 127359 |
|---|---|
| Data dodania do BaDAP | 2020-02-05 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jssc.2020.121210 |
| Rok publikacji | 2020 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Solid State Chemistry |
Abstract
In this work we present results of studies of In3þdoping in strontium cerate, comprising structural aspects, andoxygen as well as proton conductivity. Crystal structure analysis of single-phase SrCe1-xInxO3-a(x¼0.1, 0.2 and0.3) materials in 25–900C temperature range indicates presence of strong orthorhombic distortion of theperovskite-type structure, similar as for the undoped SrCeO3. Limited sinterability of the obtained powders wasmitigated by addition of 1 wt% of NiO, which allowed to manufacture dense sinters at 1400C. Electrochemicalimpedance spectroscopy measurements done in dry synthetic air show decrease of the ionic (oxygen) conductivitywith the increase of In content, as well as associated increase of the activation energy. This indicates that formedoxygen vacancies are trapped in the structure. Overall, electrical conductivity for SrCe1-xInxO3-ain H2O- and D2O-containing atmospheres decreases with In content, but respective Hþand Dþtransference numbers are larger forsamples with higher indium doping. At 500C the highest proton and deuterium conductivity was recorded forSrCe0.9In0.1O3-a, reaching up to 0.70⋅104Scm1and 0.26⋅104Scm1, respectively. Derived diffusion andsurface exchange coefficients are 107-106cm2s1and 106-105cm s1, respectively in 500–700C tem-perature range.
