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@INPROCEEDINGS{Borowec:1048726,
      author       = {Borowec, Julian and Rein, Lukas and Gorin, Nelli and Basak,
                      Shibabrata and Dobrenizki, Ladislaus and Schmid, Günter and
                      Jodat, Eva and Karl, André and Eichel, Rüdiger-A. and
                      Hausen, Florian},
      title        = {{N}anomechanical and {N}anoelectrical {A}nalysis of the
                      {P}roton {E}xchange {M}embrane {W}ater{E}lectrolyzer {A}node
                      – {I}mpact of {R}einforcement {F}ibers and {P}orous
                      {T}ransport {L}ayer},
      reportid     = {FZJ-2025-04848},
      year         = {2025},
      abstract     = {Understanding the degradation of proton exchange membrane
                      electrolyzer cells (PEMECs) is critical fordurability
                      improvements. In this work,[1] a large-scale web-woven
                      reinforced membrane electrode assembly(MEA) anode, was
                      long-term operated (>5000 hours) and analyzed by
                      nanomechanical and nanoelectricalatomic force microscopy
                      (AFM) techniques and nanoindentation. The web-woven fibers
                      were found to locallyenhance the reduced modulus and
                      hardness, making them an effective reinforcement for
                      extended operation.Notably, both pristine and operated
                      anodes exhibited slightly reduced electrically conductive
                      surface areasat intersections of reinforcement fibers. While
                      the pristine anode was initially homogeneous, it
                      heterogenizedupon operation, showing additional domains
                      related to the porous transport layer (PTL) and
                      increasedstatistical deviations. Nanoindentation revealed an
                      increased reduced modulus and hardness upon
                      operation,accompanied by a near surface stiffening of the
                      catalyst shown by AFM. This effect is promoted by the lossof
                      low-stiffness ionomer. Confirmed by the increase of
                      electrically conductive anode surface area. The most
                      pronounced aging effects were observed only at a small
                      fraction of the surface, particularly at specific
                      PTL-related features. This study provides the first detailed
                      analysis of a web-woven fiber-reinforced MEA, offeringnew
                      insights into anode aging mechanisms associated with
                      reinforcement fibers and PTL.[1] Borowec, Julian, et al.
                      “Nanomechanical and Nanoelectrical Analysis of the Proton
                      Exchange MembraneWater Electrolyzer Anode—Impact of
                      Reinforcement Fibers and Porous Transport Layer.” Journal
                      of MaterialsChemistry A (2025). DOI: 10.1039/D4TA07367C},
      month         = {Mar},
      date          = {2025-03-04},
      organization  = {Nanobrücken 2025, Halle (Germany), 4
                       Mar 2025 - 6 Mar 2025},
      subtyp        = {After Call},
      cin          = {IET-1 / IET-4},
      cid          = {I:(DE-Juel1)IET-1-20110218 / I:(DE-Juel1)IET-4-20191129},
      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)6},
      url          = {https://juser.fz-juelich.de/record/1048726},
}