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@ARTICLE{Hoppe:892694,
      author       = {Hoppe, Eugen and Janßen, Holger and Müller, Martin and
                      Lehnert, Werner},
      title        = {{T}he impact of flow field plate misalignment on the gas
                      diffusion layer intrusion and performance of a
                      high-temperature polymer electrolyte fuel cell},
      journal      = {Journal of power sources},
      volume       = {501},
      issn         = {0378-7753},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2021-02272},
      pages        = {230036 -},
      year         = {2021},
      abstract     = {Tolerances in the production process of flow field plates
                      for polymer electrolyte fuel cells (PEFCs) and the assembly
                      of single cells and stacks can lead to a misalignment among
                      the flow field plates. Due to clamping and misalignment,
                      shear stresses can be forced on the membrane electrode
                      assembly (MEA). Furthermore, the gas diffusion layer (GDL)
                      intrudes into the channel. In this study, five different
                      degrees of misalignment (0 to ) are applied to a fuel cell
                      model consisting of two flow field plates with five adjacent
                      channels each (1 mm width) and an MEA in between them. For
                      each degree, the MEA is compressed by about $30\%$ and 3D
                      images (tomograms) are recorded using an X-ray computer
                      tomograph (CT). Analyzing the cross-section of the channels,
                      the maximum intrusion depth varies for each channel.
                      Furthermore, the shape of the membrane becomes ever more
                      wavelike, with increasing misalignment and the position of
                      the maximum intrusion depth shifts sideways from the center
                      of the channel. Additionally, high-temperature polymer
                      electrolyte fuel cell (HT-PEFC) single cell experiments are
                      carried out. Two degrees of misalignment are set (normal
                      assembly and ). The performances of both degrees of
                      misalignment are within $5\%$ at a power density of 0.24
                      W.cm$^{-2}$.},
      cin          = {IEK-14},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-14-20191129},
      pnm          = {134 - Electrolysis and Hydrogen (POF3-134) / 1231 -
                      Electrochemistry for Hydrogen (POF4-123)},
      pid          = {G:(DE-HGF)POF3-134 / G:(DE-HGF)POF4-1231},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000659060900002},
      doi          = {10.1016/j.jpowsour.2021.230036},
      url          = {https://juser.fz-juelich.de/record/892694},
}