Titre du document / Document title
Tomographic diagnostics of current distributions in a fuel cell stack
Auteur(s) / Author(s)
HIRSCHFELD J. A. (1) ;
LUSTFELD H. (2) ;
REISSEL M. (3) ;
STEFFEN B. (4) ;
Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)
(1) Forschungszentrum Jülich, IAS-1, 52425 Jülich, ALLEMAGNE
(2) Forschungszentrum Jülich, IFF-1, 52425 Jülich, ALLEMAGNE
(3) Fachhochschule Aachen, Abteilung Jülich, 52428 Jülich, ALLEMAGNE
(4) Forschungszentrum Jülich, JSC, 52425 Jülich, ALLEMAGNE
Résumé / Abstract
A novel tomographic scheme for analysing the state of any single membrane electrode assembly (MEA) in a stack is suggested. Plates of very high conductivity placed between every fuel cell and slitted in an appropriate manner cause surface currents at well-defined locations of the stack. We show that knowing these surface currents, information about anomalies of the currents in a MEA can be obtained using the methods of tomography. The results are mathematically not unique. However, when assuming plausible defect structures, one can exclude improbable deficiencies by applying a special form of simulated annealing. We present numerical calculations of typical examples demonstrating that the essential defects of the MEA in any single cell of the stack can be detected and their extent can be determined.
Revue / Journal Title
International journal of energy research
ISSN
0363-907X
CODEN IJERDN
Source / Source
2010, vol. 34, n
o3, pp. 284-292 [9 page(s) (article)] (23 ref.)
Langue / Language
Anglais
Editeur / Publisher
Wiley, Chichester, ROYAUME-UNI
(1977)
(Revue)
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Localisation / Location
INIST-CNRS, Cote INIST : 17698, 35400018088170.0050
Nº notice refdoc (ud4) : 22363472
