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000141675 0247_ $$2doi$$a10.1016/j.ijhydene.2014.04.059
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000141675 041__ $$aEnglish
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000141675 1001_ $$0P:(DE-Juel1)5106$$aFroning, Dieter$$b0$$eCorresponding author
000141675 245__ $$aEvaluation of structural changes of HT-PEFC electrodes from in-situ Synchrotron X-ray radiographs
000141675 260__ $$aNew York, NY [u.a.]$$bElsevier$$c2014
000141675 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1410267300_23204
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000141675 520__ $$aOne of the main goals for improvement of high-temperature polymer electrolyte fuel cells (HT-PEFCs) is the increase of the fuel cell performance under different operating conditions. We investigated the correlation between operating conditions and structural changes in the electrodes by means of in-situ through-plane synchrotron X-ray radiography. From the radiographs it is possible to clearly distinguish between the electrode crack structure beneath the ribs and beneath the channels of the flow field. We present a statistical method to analyze these crack structures. For this purpose a ‘radar’ method was developed in order to obtain the width of the cracks at many different locations and the distribution of crack widths. We found a different behavior of cracks located beneath the ribs and beneath the channels and an influence of the operating conditions on local regions of the crack structure.
000141675 536__ $$0G:(DE-HGF)POF2-123$$a123 - Fuel Cells (POF2-123)$$cPOF2-123$$fPOF II$$x0
000141675 7001_ $$0P:(DE-Juel1)128533$$aMaier, Wiebke$$b1
000141675 7001_ $$0P:(DE-HGF)0$$aGroß, J.$$b2
000141675 7001_ $$0P:(DE-HGF)0$$aArlt, Tobias$$b3
000141675 7001_ $$0P:(DE-HGF)0$$aManke, Ingo$$b4
000141675 7001_ $$0P:(DE-Juel1)129883$$aLehnert, Werner$$b5
000141675 773__ $$0PERI:(DE-600)1484487-4$$a10.1016/j.ijhydene.2014.04.059$$n17$$p9447-9456$$tInternational journal of hydrogen energy$$v39$$x1879-3487$$y2014
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000141675 9141_ $$y2014
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