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@ARTICLE{Froning:141675,
      author       = {Froning, Dieter and Maier, Wiebke and Groß, J. and Arlt,
                      Tobias and Manke, Ingo and Lehnert, Werner},
      title        = {{E}valuation of structural changes of {HT}-{PEFC}
                      electrodes from in-situ {S}ynchrotron {X}-ray radiographs},
      journal      = {International journal of hydrogen energy},
      volume       = {39},
      number       = {17},
      issn         = {1879-3487},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2014-00044},
      pages        = {9447-9456},
      year         = {2014},
      abstract     = {One 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.},
      cin          = {IEK-3},
      ddc          = {660},
      cid          = {I:(DE-Juel1)IEK-3-20101013},
      pnm          = {123 - Fuel Cells (POF2-123)},
      pid          = {G:(DE-HGF)POF2-123},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000336880500058},
      doi          = {10.1016/j.ijhydene.2014.04.059},
      url          = {https://juser.fz-juelich.de/record/141675},
}