% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Beez:830443, author = {Beez, Alexander and Yin, Xiaoyan and Menzler, Norbert H. and Spatschek, Robert and Bram, Martin}, title = {{I}nsight into the reaction mechanism of ({L}a0.58{S}r0.40)({C}o0.20{F}e0.80){O}3-δ cathode with volatile chromium species at high current density in a solid oxide fuel cell stack}, journal = {Journal of the Electrochemical Society}, volume = {164}, number = {10}, issn = {0013-4651}, address = {Pennington, NJ}, publisher = {Electrochemical Soc.}, reportid = {FZJ-2017-03989}, pages = {F3028-F3034}, year = {2017}, abstract = {Anode-supported solid oxide fuel cells with different Cr protection layers on the metallic interconnect were operated in a short stack at 700°C for 1240 h. The current density was raised sequentially from 0.5 A cm−2 during the first 240 h of operation to 0.75 A cm−2 for a further 1000 h. After operation, the (La,Sr)(Co,Fe)O3-δ (LSCF) cathode layers were analyzed with respect to Cr interaction by both wet chemical and microstructural methods. For cells equipped with interconnects coated with a dense APS protection layer, the amount of Cr on the cathode was in the range of a few μg. For cells with a porous WPS coating on the interconnect, the amount of Cr was in the range of 110–160 μg cm−2 and Cr-containing phases were detected by SEM analysis both on top of the cathode layer and also at the LSCF/GDC interface, which has rarely been observed before. In addition, a deterioration of the cathode microstructure near the LSCF/GDC interface was observed. With respect to the high current density during operation, a theory was developed which explains both the Cr deposition at the LSCF/GDC interface and also the deterioration of the cathode.}, cin = {IEK-1 / IEK-2}, ddc = {540}, cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-2-20101013}, pnm = {135 - Fuel Cells (POF3-135) / SOFC - Solid Oxide Fuel Cell (SOFC-20140602) / HITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406)}, pid = {G:(DE-HGF)POF3-135 / G:(DE-Juel1)SOFC-20140602 / G:(DE-Juel1)HITEC-20170406}, typ = {PUB:(DE-HGF)16}, UT = {WOS:000413258100002}, doi = {10.1149/2.0051710JES}, url = {https://juser.fz-juelich.de/record/830443}, }