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@ARTICLE{Kulikovsky:903866,
      author       = {Kulikovsky, Andrei},
      title        = {{A}nalytical {I}mpedance of {O}xygen {T}ransport in the
                      {C}hannel and {G}as {D}iffusion {L}ayer of a {PEM} {F}uel
                      {C}ell},
      journal      = {Journal of the Electrochemical Society},
      volume       = {168},
      number       = {11},
      issn         = {0013-4651},
      address      = {Bristol},
      publisher    = {IOP Publishing},
      reportid     = {FZJ-2021-05499},
      pages        = {114520 -},
      year         = {2021},
      abstract     = {Analytical model for impedance of oxygen transport in the
                      gas–diffusion layer (GDL) and cathode channel of a PEM
                      fuel cell is developed. The model is based on transient
                      oxygen mass conservation equations coupled to the proton
                      current conservation equation in the catalyst layer.
                      Analytical formula for the "GDL+channel" impedance is
                      derived assuming fast oxygen and proton transport in the
                      cathode catalyst layer (CCL) In the Nyquist plot, the
                      transport impedance consists of two arcs describing oxygen
                      transport in the air channel (low–frequency arc) and in
                      the GDL. The characteristic frequency of GDL arc depends on
                      the CCL thickness: large CCL thickness strongly lowers this
                      frequency. At small CCL thickness, the high–frequency
                      feature on the arc shape forms. This effect is important for
                      identification of peaks in distribution of relaxation times
                      spectra of low–Pt PEMFCs},
      cin          = {IEK-13},
      ddc          = {660},
      cid          = {I:(DE-Juel1)IEK-13-20190226},
      pnm          = {1231 - Electrochemistry for Hydrogen (POF4-123)},
      pid          = {G:(DE-HGF)POF4-1231},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000723861000001},
      doi          = {10.1149/1945-7111/ac3a2d},
      url          = {https://juser.fz-juelich.de/record/903866},
}