TY  - JOUR
AU  - Haanappel, V. A. C.
AU  - Bär, B.
AU  - Tropartz, C.
AU  - Mertens, J.
AU  - Tietz, F.
TI  - Various Lanthanum Ferrite-Based Cathode Materials With Ni and Cu Substitution for Anode-Supported Solid Oxide Fuel Cells
JO  - Journal of fuel cell science and technology
VL  - 7
SN  - 1550-624X
CY  - New York, NY
PB  - ASME
M1  - PreJuSER-12697
SP  - 061017 - 061020
PY  - 2010
N1  - Record converted from VDB: 12.11.2012
AB  - The electrochemical performance of solid oxide fuel cells with cathodes made of La0.58Sr0.4Fe0.8Ni0.2O3-delta, La0.58Sr0.4Fe0.8Cu0.2O3-delta, La0.58Sr0.4Fe0.6Cu0.2Co0.2O3-delta, La0.58Sr0.4Fe0.7Cu0.1Co0.2O3-delta, and La2Ni0.6Cu0.4O4 has been investigated. As reference, electrochemical data from cells with La0.58Sr0.4Co0.2Fe0.8O3-delta cathodes were taken into account. The cathode layers were sintered at various temperatures. After testing, cross-sectional analyses were made in order to investigate microstructural changes in the various layers. Electrochemical tests have shown that only cells with a non-sintered Cu-containing cathode or with a similar cathode treated with relatively low sintering temperatures can be considered for SOFC applications. However, it was clear that the tested cells with cathodes including Cu and/or Ni showed electrochemical performance which was always lower than that of reference cells with La0.58Sr0.4Co0.2Fe0.8O3-delta cathode. No electrochemical measurements were possible with cathodes sintered at or above 1000 degrees C. Cross-sectional analyses revealed that in all these cases the presence of Cu exhibited severe chemical interaction with the electrolyte. In addition, several undesired phases were formed in the cathode as well as in the diffusion barrier layer. The extent of these phases and the interaction with the electrolyte layer increased with increasing sintering temperature. [DOI: 10.1115/1.4001355]
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000281307000017
DO  - DOI:10.1115/1.4001355
UR  - https://juser.fz-juelich.de/record/12697
ER  -