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@ARTICLE{Drner:1021903,
      author       = {Dörner, Sven and Kinzl, Markus and Mitsos, Alexander and
                      Bongartz, Dominik},
      title        = {{D}ynamic lumped cell-level model of chemical membrane
                      degradation in {PEM} electrolysis: {I}mpact of pressure and
                      time dependence},
      reportid     = {FZJ-2024-01051},
      year         = {2023},
      abstract     = {Chemical membrane degradation has a significant impact on
                      the lifetime of a PEM electrolyzer. For comprehensive
                      understanding, cell-level models are useful. However,
                      existing cell-level models ignore the dynamic consumption
                      process of Nafion membrane fragments over time and do not
                      consider the influence of operating parameters, such as
                      pressure, on chemical membrane degradation. To address these
                      limitations, we present a dynamic lumped cell-level model to
                      analyze chemical membrane degradation as fluoride release
                      rates. Parameter estimation with experimental literature
                      data is performed using a pseudo-steady state approach. The
                      model is used to investigate the influence of pressure. The
                      results show increased fluoride release rates and H2O2
                      concentrations at higher pressures due to enhanced O2
                      crossover. They also suggest that the maximum in degradation
                      rate at intermediate current densities is due to changing
                      water flux across the membrane. Time-dependent simulations
                      with full dynamics suggest that the maximum is reached after
                      several thousand hours.},
      cin          = {IEK-10},
      cid          = {I:(DE-Juel1)IEK-10-20170217},
      pnm          = {899 - ohne Topic (POF4-899)},
      pid          = {G:(DE-HGF)POF4-899},
      typ          = {PUB:(DE-HGF)25},
      doi          = {10.1149/osf.io/ea8qm},
      url          = {https://juser.fz-juelich.de/record/1021903},
}