Szczegóły publikacji
Opis bibliograficzny
Ceramic electrolytes in the $CeO_{2}-Gd_{2}O_{3}-SrO$ system – preparation, properties and application for solid oxide fuel cells / Magdalena DUDEK // International Journal of Electrochemical Science [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1452-3981. — 2012 — vol. 7 iss. 4, s. 2874–2889. — Bibliogr. s. 2888–2889. — Publikacja dostępna online od: 2012-04-01
Autor
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 66299 |
|---|---|
| Data dodania do BaDAP | 2012-06-11 |
| Tekst źródłowy | URL |
| Rok publikacji | 2012 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | International Journal of Electrochemical Science |
Abstract
Both Pechini method (A) and hydrothermal treatment of co-precipitated gels (B) solutions were used to synthesize nanopowders of Ce 0.8-xGd 0.2SrxO 2-δ for 0<x<0.1 solid solutions. All resulting powders and sinters were found to be cubic ceria-based solid solutions. The results of hardness, fracture toughness and bending strength measurements are reported for the sintered samples of the CeO 2-SrO-Gd 2O 3 system. The electrical properties a of ceria-based solid solutions were studied by a.c impedance spectroscopy in the temperature range 200-700 C. It was found that incorporation of a small amount of cation Sr 2+ into solid solution Ce 0.8-xGd 0.2SrxO 2-δ?0<x<0.03 allowed an increase, in the ionic conductivity of a Ce0.8Gd0.2O 2-δ?oxide electrolyte. Selected materials from the CeO 2-Gd 2O 3-SrO system were tested as oxide membranes in solid oxide fuel cells operating in the temperature range 500-800 C. The higher current and power density received from IT-SOFCs with a new electrolyte Ce 0.78Gd 0.2Sr 0.02O 2-δ were recorded and compared to the same IT-SOFC involving Ce 0.8Gd 0.2O 2-δ as an electrolyte. © 2012 by ESG.
