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@ARTICLE{Kulikovsky:903868,
      author       = {Kulikovsky, Andrei},
      title        = {{A} {K}ernel for {C}alculating {PEM} {F}uel {C}ell
                      {D}istribution of {R}elaxation {T}imes},
      journal      = {Frontiers in energy research},
      volume       = {9},
      issn         = {2296-598X},
      address      = {Lausanne},
      publisher    = {Frontiers Media},
      reportid     = {FZJ-2021-05501},
      pages        = {780473},
      year         = {2021},
      abstract     = {Impedance of all oxygen transport processes in PEM fuel
                      cell has negative real part in some frequency domain. A
                      kernel for calculation of distribution of relaxation times
                      (DRT) of a PEM fuel cell is suggested. The kernel is
                      designed for capturing impedance with negative real part and
                      it stems from the equation for impedance of oxygen transport
                      through the gas-diffusion transport layer
                      (doi:10.1149/2.0911509jes). Using recent analytical solution
                      for the cell impedance, it is shown that DRT calculated with
                      the novel K2 kernel correctly captures the GDL transport
                      peak, whereas the classic DRT based on the RC-circuit
                      (Debye) kernel misses this peak. Using K2 kernel, analysis
                      of DRT spectra of a real PEMFC is performed. The leftmost on
                      the frequency scale DRT peak represents oxygen transport in
                      the channel, and the rightmost peak is due to proton
                      transport in the cathode catalyst layer. The second, third,
                      and fourth peaks exhibit oxygen transport in the GDL,
                      faradaic reactions on the cathode side, and oxygen transport
                      in the catalyst layer, respectively.},
      cin          = {IEK-13},
      ddc          = {333.7},
      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:000730907600001},
      doi          = {10.3389/fenrg.2021.780473},
      url          = {https://juser.fz-juelich.de/record/903868},
}