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The effect of potassium on the properties of PrBa1−xCo2O5+δ (x = 0.00–0.10) cathodes for intermediate-temperature solid oxide fuel cells.
- Source :
-
International Journal of Hydrogen Energy . Aug2016, Vol. 41 Issue 31, p13705-13714. 10p. - Publication Year :
- 2016
-
Abstract
- An understanding of the relationships between the processing, compositions, and properties of perovskites is vitally important in the search for high performance cathode materials for intermediate-temperature solid oxide fuel cells (IT-SOFCs). In this work, the properties of PrBa 1−x Co 2 O 5+δ (x = 0.00–0.10) double perovskites were modified by introducing K during synthesis, and their performances as the cathode materials for IT-SOFCs were then characterized. The addition of K resulted in a greater cation deficiency in the double perovskites, improving bulk oxygen transport. However, K addition also markedly decreased the Co ion content on the perovskites' surfaces, which significantly deteriorated the perovskites’ electrochemical performances related to the surface exchange of oxygen. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03603199
- Volume :
- 41
- Issue :
- 31
- Database :
- Academic Search Index
- Journal :
- International Journal of Hydrogen Energy
- Publication Type :
- Academic Journal
- Accession number :
- 116963294
- Full Text :
- https://doi.org/10.1016/j.ijhydene.2016.05.060