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@INPROCEEDINGS{Bartoli:1051643,
      author       = {Bartoli, Francesco and salavei, andrei and Hilche, Tobias
                      and Kiran, Kiran and Fröhlich, Kristina and Treutlein,
                      Leander and Wolf, Niklas and Mehlkoph, Tobias and Karl,
                      André and Jodat, Eva and Eichel, Rüdiger-A.},
      title        = {{O}ptimization of {B}lade {C}oating {P}rocesses for the
                      {P}roduction of {L}arge {S}cale {PEMEC} {MEA}s with {L}ow
                      {I}ridium {L}oading},
      reportid     = {FZJ-2026-00555},
      year         = {2025},
      abstract     = {Current efforts in the development of Proton Exchange
                      Membrane Water Electrolysis (PEMWE) are driven by the
                      ongoing energy transition and the need to phase out fossil
                      fuels, to reduce dependence on other countries for energy
                      supply. However, since this technology strongly relies on
                      precious metals for their functioning, it is imperative to
                      reduce their content while ensuring good performances.
                      Stability overtime is also a major concern, since these
                      devices are expected to operate for hundreds of hours while
                      delivering the same amount of H2 throughout their life
                      cycle.In this work we present our recent results regarding
                      the preparation of Membrane Electrode Assemblies (MEAs) made
                      with supported catalyst commercially available and their
                      performance on PEMWE1.Firstly, we prepared the ink
                      containing the catalyst powder (Pt/C for the cathode and
                      IrOx/TiOx for the anode), DI water, IPA and Nafion ionomer.
                      The mixtures were ultrasonicated and the resulting slurries
                      were used for the deposition process on Kapton HN substrates
                      by Doctor Blade technique2. This technique was chosen since
                      it is easily transferable to roll-to-roll compatible
                      slot-die coating, and hence for industrial application3.
                      Through decal transfer process, catalyst layers of 25 cm2
                      were transferred on Nafion 115 using a hot press machine4,
                      the MEA was named Ir75OxTiOx|N115|PtC. Pt and Ir loading of
                      cathode and anode were 0.22 and 0.35 mg/cm2 respectively.
                      Scanning electron microscopy (SEM) was used to study the
                      MEAs´ morphology and cross section. In order to record
                      stable results under realistic conditions, the cell was
                      subjected to 50 hours of conditioning, in which the current
                      density was increased stepwise from 0.5, 1.0, 1.5 and
                      finally 2.0 A/cm2. Then a polarization curve was recorded
                      (Fig. 1 left), here performance of Ir75OxTiOx|N115|PtC was
                      reported; the plot show how at 1.0 A/cm2 the cell voltage
                      was only 1.8 V, a very low value considering that the Ir
                      load was only 0.35 mg/cm2. Stability curve at 2.0 A/cm2 was
                      recorded after 50 h of conditioning (Fig. 1 right), showing
                      no sign of degradation, paving the way for future scale-up
                      further to 100 cm2 and beyond.},
      month         = {Sep},
      date          = {2025-09-07},
      organization  = {76th Annual ISE Meeting Mainz, Mainz
                       (Germany), 7 Sep 2025 - 12 Sep 2025},
      subtyp        = {After Call},
      cin          = {IET-1},
      cid          = {I:(DE-Juel1)IET-1-20110218},
      pnm          = {1231 - Electrochemistry for Hydrogen (POF4-123) / HITEC -
                      Helmholtz Interdisciplinary Doctoral Training in Energy and
                      Climate Research (HITEC) (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF4-1231 / G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)24},
      url          = {https://juser.fz-juelich.de/record/1051643},
}