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@ARTICLE{Kulikovsky:890254,
      author       = {Kulikovsky, Andrei},
      title        = {{PEM} fuel cell distribution of relaxation times: a method
                      for the calculation and behavior of an oxygen transport
                      peak},
      journal      = {Physical chemistry, chemical physics},
      volume       = {22},
      number       = {34},
      issn         = {1463-9084},
      address      = {Cambridge},
      publisher    = {RSC Publ.},
      reportid     = {FZJ-2021-00838},
      pages        = {19131 - 19138},
      year         = {2020},
      abstract     = {A simple numerical method for the calculation of the
                      distribution of relaxation times (DRT) for PEM fuel cell
                      impedance is developed. The method combines the Tikhonov
                      regularization technique and projected gradient iterations.
                      The method is illustrated by calculating DRT for the
                      synthetic impedance of two parallel RC-circuits and for
                      Warburg finite-length impedance. Finally, cathode catalyst
                      layer (CCL) impedance is calculated using the exact
                      analytical solution and the method discussed is applied to
                      understand the behavior of the DRT peak due to oxygen
                      transport in the CCL. The position of the oxygen transport
                      peak on the frequency scale exhibits non-monotonic behavior
                      as the oxygen diffusion coefficient in the CCL decreases,
                      which may serve as an indicator of CCL flooding. The Python
                      code for DRT calculation is available for download.},
      cin          = {IEK-14},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-14-20191129},
      pnm          = {135 - Fuel Cells (POF3-135)},
      pid          = {G:(DE-HGF)POF3-135},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {32808947},
      UT           = {WOS:000567772700032},
      doi          = {10.1039/D0CP02094J},
      url          = {https://juser.fz-juelich.de/record/890254},
}