Szczegóły publikacji
Opis bibliograficzny
Electrochemical performance of $Pr_{1-x}Y_{x}BaCo_{2}O_{5+\delta}$ layered perovskites as cathode materials for intermediate-temperature solid oxide fuel cells / Hailei Zhao, Yu Zheng, Chunyang Yang, Yongna Shen, Zhihong Du, Konrad ŚWIERCZEK // International Journal of Hydrogen Energy ; ISSN 0360-3199. — 2013 — vol. 38 iss. 36, s. 16365–16372. — Bibliogr. s. 16371–16372, Abstr.
Autorzy (6)
- Zhao Hailei
- Zheng Yu
- Yang Chunyang
- Shen Yongna
- Du Zhihong
- AGHŚwierczek Konrad
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 79056 |
|---|---|
| Data dodania do BaDAP | 2014-01-21 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.ijhydene.2013.10.003 |
| Rok publikacji | 2013 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | International Journal of Hydrogen Energy |
Abstract
Pr1-xYxBaCo2O5+delta (x = 0.3, 0.5 and 0.7) oxides were prepared and evaluated as cathode materials for intermediate-temperature solid oxide fuel cells. The effect of Y-doping on the crystal structure, oxygen vacancy concentration, thermal expansion coefficient (TEC), electrical conductivity and cathode performance of Pr1-xYxBaCo2O5+delta was investigated. These properties were compared with that of GdBaCo2O5+delta having a middle element of lanthanides. Pr1-xYxBaCo2O5+delta shows TEC (similar to 17.6 x 10(-6) K-1) lower than that of undoped PrBaCo2O5+delta, but similar to the one for GdBaCo2O5+delta. Y-doping causes a decrease in electrical conductivity, but at the same time induces an increase in oxygen vacancy concentration. With increasing Y-doping level, the area specific resistance (ASR) of Pr1-xYxBaCo2O5+delta-based electrode in a symmetrical cell increases, and correspondingly, the peak power density of single-cell decreases slightly. Nevertheless, comparing to GdBaCo2O5+delta-based electrode, Pr1-xYxBaCo2O5+delta (x = 0.3-0.7) exhibits significantly lower ASR, and allows to obtain cells with higher maximum power density. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
