Journal Article

FZJ-2015-02995

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Validation of a novel method for detecting and stabilizing malfunctioning areas in fuel cell stacks

Müller, M. (Corresponding Author) ; Hirschfeld, J. ; Lambertz, R.FZJ* ; Schulze Lohoff, A.FZJ* ; Lustfeld, H.FZJ* ; Pfeifer, H.FZJ* ; Reißel, M.

2014
Elsevier New York, NY [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.jpowsour.2014.08.045

Abstract: In this paper a setup for detecting malfunctioning areas of MEAs in fuel cell stacks is described. Malfunctioning areas generate electric cross currents inside bipolar plates. To exploit this we suggest bipolar plates consisting not of two but of three layers. The third one is a highly conducting layer and segmented such that the cross currents move along the segments to the surface of the stack where they can be measured by an inductive sensor. With this information a realistic model can be used to detect the malfunctioning area. Furthermore the third layer will prevent any current inhomogeneity of a malfunctioning cell to spread to neighbouring cells in the stack. In this work the results of measurements in a realistic cell setup will be compared with the results obtained in simulation studies with the same configuration. The basis for the comparison is the reliable characterisation of the electrical properties of the cell components and the implication of these results into the simulation model. The experimental studies will also show the limits in the maximum number of segments, which can be used for a reliable detection of cross currents.

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Contributing Institute(s):

1. Elektrochemische Verfahrenstechnik (IEK-3)
2. Quanten-Theorie der Materialien (PGI-1)
3. Elektronische Eigenschaften (PGI-6)
4. Quanten-Theorie der Materialien (IAS-1)

Research Program(s):

1. 123 - Fuel Cells (POF2-123) (POF2-123)
2. 422 - Spin-based and quantum information (POF2-422) (POF2-422)

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 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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