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@ARTICLE{Reshetenko:897481,
      author       = {Reshetenko, Tatyana and Kulikovsky, Andrei},
      title        = {{U}nderstanding the distribution of relaxation times of a
                      low–{P}t {PEM} fuel cell},
      journal      = {Electrochimica acta},
      volume       = {391},
      issn         = {0013-4686},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2021-03814},
      pages        = {138954 -},
      year         = {2021},
      abstract     = {Distribution of relaxation times (DRT) is calculated from
                      fifty local impedance spectra of a low–Pt PEM fuel cell.
                      48 out of 50 DRT spectra contain three peaks. Evolution of
                      the peak frequency positions and resistivities with the cell
                      current density are analyzed. The analysis allows us to
                      attribute the low–frequency peak to oxygen transport in
                      the gas–diffusion layer (perhaps, including transport in
                      the channel), the middle peak to unresolved processes of
                      charge–transfer and oxygen transport in the ionomer film,
                      and the high-frequency peak to oxygen transport in void
                      pores of the catalyst layer. Comparison of DRT spectra of
                      low–Pt and high–Pt cells suggests a method for measuring
                      ionomer film transport resistivity in a low–Pt cell.},
      cin          = {IEK-13},
      ddc          = {540},
      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},
      doi          = {10.1016/j.electacta.2021.138954},
      url          = {https://juser.fz-juelich.de/record/897481},
}