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@INPROCEEDINGS{Pape:1019581,
      author       = {Pape, Sharon and Keller, Roger and Seidler, Florian and
                      Müller, Martin and Mechler, Anna and Lohmann-Richters,
                      Felix},
      title        = {{D}egradation {A}ssessment for {D}ynamic {O}peration of
                      {A}lkaline {E}lectrolysis {P}owered by {R}enewable {E}nergy},
      reportid     = {FZJ-2023-05516},
      year         = {2023},
      abstract     = {Alkaline water electrolysis is considered a core technology
                      for producing hydrogen on a large scale using renewable
                      energy. Renewable energies characteristically exhibit a
                      fluctuating and highly dynamic behavior. However,
                      conventional electrolyzers are designed to operate under
                      constant process conditions. To couple alkaline water
                      electrolysis with renewable energy, efforts are needed to
                      understand how dynamic operation impacts the durability of
                      the electrolysis system.This work aims to evaluate the
                      influence of intermittent operation on the durability of an
                      alkaline electrolyzer. Within this study, the behavior of
                      bare nickel electrodes responding to fluctuating potentials
                      was evaluated. Several influencing factors were evaluated to
                      investigate durability. Among these factors were various
                      load types such as the holding of the potential and the
                      cycling of the potential in triangular wave or square wave
                      (Figures 1a-c). Furthermore, the response to a renewable
                      energy input was investigated (Figure 1d). Ultimately, this
                      will allow to elucidate the relation between performance
                      losses during potential cycling and renewable load
                      profiles.Overall, the research is critical in understanding
                      how long-term performance will be affected as electrolysis
                      shifts to an intermittent renewable power supply. The
                      observations can provide metrics regarding future types and
                      degrees of operational load to limit performance loss and
                      can help assess long-term durability.},
      month         = {Jul},
      date          = {2023-07-04},
      organization  = {European Electrolyser and Fuel Cell
                       Forum 2023, Luzern (Switzerland), 4 Jul
                       2023 - 7 Jul 2023},
      cin          = {IEK-14 / IEK-9 / IEK-5},
      cid          = {I:(DE-Juel1)IEK-14-20191129 / I:(DE-Juel1)IEK-9-20110218 /
                      I:(DE-Juel1)IEK-5-20101013},
      pnm          = {1231 - Electrochemistry for Hydrogen (POF4-123)},
      pid          = {G:(DE-HGF)POF4-1231},
      typ          = {PUB:(DE-HGF)1},
      doi          = {10.34734/FZJ-2023-05516},
      url          = {https://juser.fz-juelich.de/record/1019581},
}