%0 Journal Article
%A Menzler, Norbert H.
%A Sebold, Doris
%A Fang, Qingping
%T Chromium-related degradation of thin-film electrolyte solid oxide fuel cell stacks
%J Journal of the Electrochemical Society
%V 162
%N 12
%@ 0013-4651
%C Pennington, NJ
%I Electrochemical Soc.
%M FZJ-2015-05132
%P F1275-F1281
%D 2015
%X SOFC short stacks with thin-film electrolyte anode-supported cells were operated for up to ∼3,000 h and post-test characterized. The cells consisted of thin electrolyte films (≤ 3 μm) and LSCF or LSC cathodes. Typical manganese-oxide chromium evaporation protection layers and perovskitic cathode contact layers were used. Operating parameters were: temperatures between 600°C and 750°C, a current density of 500 mA/cm², hydrogen with 20% water vapor as fuel, and a fuel utilization of ∼40%. Microstructural characterization revealed that Cr-containing phases formed at different locations. SEM and TEM analysis of some cells additionally showed microstructural changes within the GDC layer. A possible explanation for the different chromium-containing phase locations based on theoretical assumptions is given.
%B Solid Oxide Fuel Cells 14
%C 26 Jul 2015 - 31 Jul 2015, Glasgow (United Kingdom)
Y2 26 Jul 2015 - 31 Jul 2015
M2 Glasgow, United Kingdom
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000363600300053
%R 10.1149/2.0101512jes
%U https://juser.fz-juelich.de/record/203108