Journal Article

FZJ-2018-03784

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Mechanical characterization of SOFC/SOEC cells

Wei, J.FZJ* ; Osipova, T.FZJ* ; Malzbender, J. (Corresponding author)FZJ* ; Krüger, M.FZJ*

2018
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.ceramint.2018.03.103

Abstract: Mechanical reliability is one main prerequisite for the long-term operation of Solid Oxide Fuel Cells (SOFCs) and Solid Oxide Electrolysis Cells (SOEC) in stacks and systems. Hence, key mechanical properties were derived for cells to be used in Jülich stacks and systems. Since assembling and joining is typically carried out in oxidized state, whereas operation requires reduction of the anode, mechanical characterizations are performed for cells in oxidized and reduced state with additional consideration of elevated temperature behavior as well as possible mechanical degradation due to subcritical crack growth. In particular, fracture strength, elastic modulus and residual stress for half-cells were assessed. With respect to fracture strength, also subcritical crack growth at different temperatures has been analyzed, being the basis of a derived strength-probability-time plot. Overall, the work provides parameters for determination of failure probability and lifetime prediction.

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Contributing Institute(s):

1. Werkstoffstruktur und -eigenschaften (IEK-2)

Research Program(s):

1. 135 - Fuel Cells (POF3-135) (POF3-135)

Appears in the scientific report 2018

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

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