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000008564 084__ $$2WoS$$aEnergy & Fuels
000008564 084__ $$2WoS$$aNuclear Science & Technology
000008564 1001_ $$0P:(DE-Juel1)130713$$aHirschfeld, J.A.$$b0$$uFZJ
000008564 245__ $$aTomographic diagnostics of current distributions in a fuel cell stack
000008564 260__ $$aLondon [u.a.]$$bWiley-Intersience$$c2010
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000008564 520__ $$aA novel tomographic scheme for analysing the state of any single membrane electrode assembly (MEA) in a stack is suggested. Plates of very high conductivity placed between every fuel cell and slitted in an appropriate manner cause surface currents at well-defined locations of the stack. We show that knowing these surface currents, information about anomalies of the currents in a MEA can be obtained using the methods of tomography. The results are mathematically not unique. However, when assuming plausible defect structures, one can exclude improbable deficiencies by applying a special form of simulated annealing. We present numerical calculations of typical examples demonstrating that the essential defects of the MEA in any single cell of the stack can be detected and their extent can be determined. Copyright (C) 2009 John Wiley & Sons, Ltd.
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000008564 65320 $$2Author$$adefect detection
000008564 65320 $$2Author$$adegradation
000008564 65320 $$2Author$$astack
000008564 65320 $$2Author$$afuel cell
000008564 65320 $$2Author$$acurrent density distribution
000008564 65320 $$2Author$$atomography
000008564 65320 $$2Author$$aMEA
000008564 65320 $$2Author$$aDMFC
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000008564 7001_ $$0P:(DE-Juel1)130810$$aLustfeld, H.$$b1$$uFZJ
000008564 7001_ $$0P:(DE-HGF)0$$aReißel, M.$$b2
000008564 7001_ $$0P:(DE-Juel1)132269$$aSteffen, B.$$b3$$uFZJ
000008564 773__ $$0PERI:(DE-600)1480879-1$$a10.1002/er.1634$$gVol. 34, p. 284 - 292$$p284 - 292$$q34<284 - 292$$tInternational journal of energy research$$v34$$x0363-907X$$y2010
000008564 8567_ $$uhttp://dx.doi.org/10.1002/er.1634
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