Journal Article

FZJ-2015-05132

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Chromium-related degradation of thin-film electrolyte solid oxide fuel cell stacks

Menzler, N. H. (Corresponding author)FZJ* ; Sebold, D.FZJ* ; Fang, Q.FZJ*

2015
Electrochemical Soc. Pennington, NJ

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Please use a persistent id in citations: doi:10.1149/2.0101512jes

Abstract: 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.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
2. Elektrochemische Verfahrenstechnik (IEK-3)

Research Program(s):

1. 135 - Fuel Cells (POF3-135) (POF3-135)
2. SOFC - Solid Oxide Fuel Cell (SOFC-20140602) (SOFC-20140602)

Appears in the scientific report 2015

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Database coverage:
; ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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