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@ARTICLE{Reshetenko:873874,
      author       = {Reshetenko, Tatyana and Kulikovsky, Andrei},
      title        = {{O}n the {O}rigin of {H}igh {F}requency {I}mpedance
                      {F}eature in a {PEM} {F}uel {C}ell},
      journal      = {Journal of the Electrochemical Society},
      volume       = {166},
      number       = {15},
      issn         = {1945-7111},
      address      = {Pennington, NJ},
      publisher    = {Electrochemical Soc.},
      reportid     = {FZJ-2020-01066},
      pages        = {F1253 - F1257},
      year         = {2019},
      abstract     = {Measured impedance spectra of a low–Pt PEM fuel cell
                      exhibit high slope in the high–frequency range. To explain
                      this feature, we introduce an "external" capacitance Cext
                      connected in parallel to our recent model for the cathode
                      catalyst layer impedance. This capacitance greatly improves
                      the quality of spectra fitting in the high–frequency
                      domain. We argue that the external capacitance forms due to
                      electric double layer at the carbon/Nafion and carbon/water
                      interface. This interface does not participate in the oxygen
                      reduction and hence it shows up as a capacitance connected
                      in parallel to the catalyst layer impedance. Incorporation
                      of Cext into the model leads to lower values of CCL proton
                      conductivity, than those reported in our previous works.},
      cin          = {IEK-14 / IEK-3},
      ddc          = {660},
      cid          = {I:(DE-Juel1)IEK-14-20191129 / 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:000499629500002},
      doi          = {10.1149/2.1201915jes},
      url          = {https://juser.fz-juelich.de/record/873874},
}