Szczegóły publikacji
Opis bibliograficzny
Composite cathode materials $Ag-Ba_{0.5}Sr_{0.5}Co_{0.8}Fe_{0.2}O_{3}$ for solid oxide fuel cells / Michał Mosiałek, Magdalena DUDEK, Aneta Michna, Maciej Tatko, Aneta Kędra, Małgorzata Zimowska // Journal of Solid State Electrochemistry ; ISSN 1432-8488. — 2014 — vol. 18 iss. 11, s. 3011–3021. — Bibliogr. s. 3020–3021, Abstr. — Proceedings of the 6th Kurt Schwabe symposium : Cracow, Poland, September 2–6, 2013
Autorzy (6)
- Mosiałek Michał
- AGHDudek Magdalena
- Michna Aneta
- Tatko Maciej
- Kędra Aneta
- Zimowska Małgorzata
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 85916 |
|---|---|
| Data dodania do BaDAP | 2014-11-28 |
| Tekst źródłowy | URL |
| DOI | 10.1007/s10008-014-2457-4 |
| Rok publikacji | 2014 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Solid State Electrochemistry |
Abstract
Silver-Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) cathodes were prepared in two ways. In the first method, Ag-BSCF composite powder was prepared in ethanol solution, where Ag nanoparticles serving as a component in the preparation of Ag-BSCF composite cathodes had been previously obtained via one-step synthesis in absolute ethanol using a neutral polymer (polyvinylpyrrolidone). To the best of our knowledge, this is the first study to use a Ag sol obtained by the above method for preparation of Ag-BSCF composite powder. Then, a paste containing this powder was screen-printed on a Sm0.2Ce0.8O1.9 electrolyte and sintered at 1,000 A degrees C. In the second technique, an aqueous solution of AgNO3 was added to a previously sintered BSCF cathode, which was then sintered again at 800 A degrees C. The oxygen reduction reaction at the quasi-point BSCF cathode on the Sm0.2Ce0.8O1.9 electrolyte was tested by electrochemical impedance spectroscopy at different oxygen concentrations in three electrode setup. The continuous decrease of polarization resistance was observed under polarization -0.5 V at 600 A degrees C. The comparative studies of both obtained composite Ag-BSCF materials were performed in hydrogen-oxygen IT-SOFC involving samaria-doped ceria as an electrolyte and Ni-Gd0.2Ce0.8O1.9 anode. In both cases, the addition of silver to the cathode caused an increase in current and power density compared with an IT-SOFC built with the same components but involving a monophase BSFC cathode material.