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@ARTICLE{Reshetenko:850779,
      author       = {Reshetenko, Tatyana and Kulikovsky, Andrei},
      title        = {{T}wo {S}tates of the {C}athode {C}atalyst {L}ayer
                      {O}peration in a {PEM} {F}uel {C}ell},
      journal      = {Journal of the Electrochemical Society},
      volume       = {165},
      number       = {10},
      issn         = {1945-7111},
      address      = {Pennington, NJ},
      publisher    = {Electrochemical Soc.},
      reportid     = {FZJ-2018-04553},
      pages        = {F821 - F826},
      year         = {2018},
      abstract     = {We measure impedance of a standard Pt/C–based PEM fuel
                      cell for a series of current densities from 50 to 400 mA
                      cm− 2. Using our recent model for extraction of
                      spatially–resolved data from impedance spectra, we plot
                      the dependence of the oxygen diffusion coefficient Dox in
                      the cathode catalyst layer (CCL) and Db in the
                      gas–diffusion layer (GDL) on the distance along the
                      cathode channel. While the GDL oxygen diffusivity is fairly
                      uniform over the cell active area, the shape of Dox
                      indicates that the cell is separated into two domains with
                      high and low water contents in the CCL. We attribute this
                      effect to the positive feedback loop between the rates of
                      oxygen transport and liquid water evaporation in the CCL,
                      leading to local CCL flooding.},
      cin          = {IEK-3},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-3-20101013},
      pnm          = {135 - Fuel Cells (POF3-135)},
      pid          = {G:(DE-HGF)POF3-135},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000441061800108},
      doi          = {10.1149/2.0541810jes},
      url          = {https://juser.fz-juelich.de/record/850779},
}