Replication Data for: Cross-plane iridium-based filaments sap efficiency in Proton Exchange Membrane Electrolyzersdoi:10.26165/JUELICH-DATA/IMZWZMJülich DATA2026-01-221Heume, Christine; Javed, Ali; Karyofylli, Violeta; Dzieciol, Krzysztof; Basak, Shibabrata; Poc, Jean-Pierre; Tasdemir, Yasemin; Rutsch, Yannik; Rein, Lukas; Wolf, Niklas; Speer, Sebastian; Jovanovic, Sven; Treutlein, Leander; Borowec, Julian; Hausen, Florian; Dobrenizki, Ladislaus; Malmberg, Stephan; Granwehr, Josef; Kungl, Hans; Jodat, Eva; Geskes, Peter; Karl, André; Schmid, Günter; Eichel, Rüdiger-A,, 2026, "Replication Data for: Cross-plane iridium-based filaments sap efficiency in Proton Exchange Membrane Electrolyzers", https://doi.org/10.26165/JUELICH-DATA/IMZWZM, Jülich DATA, V1Replication Data for: Cross-plane iridium-based filaments sap efficiency in Proton Exchange Membrane Electrolyzersdoi:10.26165/JUELICH-DATA/IMZWZMHeume, ChristineJaved, AliKaryofylli, VioletaDzieciol, KrzysztofBasak, ShibabrataPoc, Jean-PierreTasdemir, YaseminRutsch, YannikRein, LukasWolf, NiklasSpeer, SebastianJovanovic, SvenTreutlein, LeanderBorowec, JulianHausen, FlorianDobrenizki, LadislausMalmberg, StephanGranwehr, JosefKungl, HansJodat, EvaGeskes, PeterKarl, AndréSchmid, GünterEichel, Rüdiger-A,Heume, ChristineHeume, ChristineEichel, Rüdiger-A.PythonNanoscope Analysis (Bruker, USA)GNU Octave (GNU Project, Free Software Foundation, USA)03HY122CJülich DATAHeume, ChristineKarl, AndréJodat, EvaHeume, Christine2024-08-27ChemistryComputer and Information ScienceEngineeringPhysicsThis repository contains the primary datasets associated with the publication <b>“Cross-plane iridium-based filaments sap efficiency in Proton Exchange Membrane Electrolyzers” (DOI: https://doi.org/10.1016/j.joule.2025.102238)</b>. It provides raw and processed data as used in the publication, organized into sub-folders by measurement technique. Each dataset folder includes its own README.txt file describing file formats and instructions for data handling.<p><p> The data were collected to investigate an aging phenomenon in PEM electrolysis cell MEAs involving the growth of cross-plane iridium filaments within the membrane, correlated with the porous transport layer design. The aim of the study is to improve efficiency, durability, and large-scale green hydrogen production.<p><p> Folder contents (switch to "tree" view to see the folders):<p> - <b>README.txt</b>: Please read the README.txt file within this folder first. It contains more detailed information of the contents in each sub folder.<p> - <b>Atomic_Force_Microscopy</b>: AFM data. Please read the READM.txt file within this folder for more information.<p> - <b>Computational_Model</b>: Computational model data. Please read the READM.txt file within this folder for more information.<p> - <b>Electrochemical_Impedance_Spectroscopy</b>: Electrochemical impedance data. Please read the READM.txt file within this folder for more information.<p> - <b>Hydrogen_Permeability</b>: Hydrogen permeability data. Please read the READM.txt file within this folder for more information.<p> - <b>Polarization_Curves</b>: Polarization curve data. Please read the READM.txt file within this folder for more information.<p> - <b>Raman_Spectroscopy</b>: Raman spetroscopy data. Please read the READM.txt file within this folder for more information.<p> - <b>SEM_EDS_TEM</b>: SEM, EDS and TEM data. Please read the READM.txt file within this folder for more information.<p>Heume, Christine, et al. "Cross-plane iridium-based filaments sap efficiency in Proton Exchange Membrane Electrolyzers." Joule 10 (2026): 102238.1 long filament 0.1mW (B+R) (Sub BG).txttext/plain1 long filament 0.1mW (B+R).txttext/plain1 long filament 0.1mW.txttext/plain1 small filament 0.1mW (B+R) (Sub BG).txttext/plain1 small filament 0.1mW (B+R).txttext/plain1 small filament 0.1mW.txttext/plain2 long filament 0.5mW (B+R) (Sub BG).txttext/plain2 long filament 0.5mW (B+R).txttext/plain2 long filament 0.5mW.txttext/plain2 small filament 0.5mW (B+R) (Sub BG).txttext/plain2 small filament 0.5mW (B+R).txttext/plain2 small filament 0.5mW.txttext/plain3 long filament 1mW (B+R) (Sub BG).txttext/plain3 long filament 1mW (B+R).txttext/plain3 long filament 1mW.txttext/plain3 small filament 1mW (B+R) (Sub BG).txttext/plain3 small filament 1mW (B+R).txttext/plain3 small filament 1mW.txttext/plain4 long filament 0.5mW (B+R) (Sub BG).txttext/plain4 long filament 0.5mW (B+R).txttext/plain4 long filament 0.5mW.txttext/plain4 small filament 0.5mW (B+R) (Sub BG).txttext/plain4 small filament 0.5mW (B+R).txttext/plain4 small filament 0.5mW.txttext/plain5 long filament 0.1mW (B+R) (Sub BG).txttext/plain5 long filament 0.1mW (B+R).txttext/plain5 long filament 0.1mW.txttext/plain5 small filament 0.1mW (B+R) (Sub BG).txttext/plain5 small filament 0.1mW (B+R).txttext/plain5 small filament 0.1mW.txttext/plainAFM_Post-Operated-Cross-Section.spmapplication/octet-streamcurrentHP.npyapplication/octet-streamcurrentHRS.npyapplication/octet-streamcurrentLRS.npyapplication/octet-streamcurrent.svgimage/svg+xmlcurrent.svgimage/svg+xmlcurrent.svgimage/svg+xmlcurrent.svgimage/svg+xmlcurrent.svgimage/svg+xmlcurrent.svgimage/svg+xmlcurrent.svgimage/svg+xmlcurrent.svgimage/svg+xmlcurrent.svgimage/svg+xmlcurrent.svgimage/svg+xmlcurrent.svgimage/svg+xmlcurrent.svgimage/svg+xmlcurrent.svgimage/svg+xmlcurrent.svgimage/svg+xmlcurrentVeryLRS.npyapplication/octet-streamDC current@1 V_50 C_post-operated_AJ.text.txttext/plainDC current@1 V_50 C_pristine_AJ.text.txttext/plainDC current@1 V_60 C_post-operated_AJ.text.txttext/plainDC current@1 V_60 C_pristine_AJ.text.txttext/plainDC current@1 V_70 C_post-operated_AJ.text.txttext/plainDC current@1 V_70 C_pristine_AJ.text.txttext/plainDC current@1 V_80 C_post-operated_AJ.text.txttext/plainDC current@1 V_80 C_pristine_AJ.text.txttext/plainenvironment_codeFilamentPaper.ymlapplication/octet-streametaFHP.npyapplication/octet-streametaFHRS.npyapplication/octet-streametaFLP.npyapplication/octet-streametaFLRS.npyapplication/octet-streametaFMP.npyapplication/octet-streametaFVeryLRS.npyapplication/octet-streamflow.svgimage/svg+xmlflow.svgimage/svg+xmlflow.svgimage/svg+xmlflow.svgimage/svg+xmlflow.svgimage/svg+xmlflow.svgimage/svg+xmlflow.svgimage/svg+xmlflow.svgimage/svg+xmlflow.svgimage/svg+xmlflow.svgimage/svg+xmlflow.svgimage/svg+xmlflow.svgimage/svg+xmlflow.svgimage/svg+xmlflow.svgimage/svg+xmlHP.csvtext/csvHRS.csvtext/csvimpedance@0.5V_80 C_pristine_AJ.text.txttext/plainimpedance@0V_80 C_pristine_AJ.text.txttext/plainimpedance@1V_80 C_pristine_AJ.text.txttext/plainimpedance_50 C_post-operated_AJ.text.txttext/plainimpedance_50 C_pristine_AJ.text.txttext/plainimpedance_60 C_post-operated_AJ.text.txttext/plainimpedance_60 C_pristine_AJ.text.txttext/plainimpedance_70 C_post-operated_AJ.text.txttext/plainimpedance_70 C_pristine_AJ.text.txttext/plainimpedance_80 C_post-operated_AJ.text.txttext/plainimpedance_80 C_pristine_AJ.text.txttext/plainLICENSEtext/plain; charset=US-ASCIILP.csvtext/csvLRS.csvtext/csvMEA_post-operated_POL_protocol.mpsapplication/octet-streamMEA_post-operated_POL_raw_data.txttext/plainMEA_pristine_POL_protocol.mpsapplication/octet-streamMEA_pristine_POL_raw_data.txttext/plainMP.csvtext/csvOpticalMicroscope.tifimage/tiffOpticalMicroscope-TipEngaged.tifimage/tiffoutput.csvtext/comma-separated-valuesoutput.csvtext/comma-separated-valuesoutput.csvtext/comma-separated-valuesoutput.csvtext/comma-separated-valuesoutput.csvtext/comma-separated-valuesoutput.csvtext/comma-separated-valuesoutput.csvtext/comma-separated-valuesoutput.csvtext/comma-separated-valuesoutput.csvtext/comma-separated-valuesoutput.csvtext/comma-separated-valuesoutput.csvtext/comma-separated-valuesoutput.csvtext/comma-separated-valuesoutput.csvtext/comma-separated-valuesoutput.csvtext/comma-separated-valuesPEMEC_EC.pytext/x-pythonPEMEC_E.pytext/x-pythonPEMECGasCrossOverMain.pytext/x-pythonPEMECGasCrossOver.pdfapplication/pdfPEMECParametersGasCrossOver.pytext/x-pythonPEMECParametersParasiticCurrent.pytext/x-pythonPEMECParasiticCurrentFaradaicEfficiency_Horizontal.pdfapplication/pdfPEMECParasiticCurrentIVCurves_Horizontal.pdfapplication/pdfPEMECParasiticCurrentMain.pytext/x-pythonPEMECPolarizationCurve.pdfapplication/pdfpermeability_h2.csvtext/comma-separated-valuespermeability_h2.csvtext/comma-separated-valuespermeability_h2.csvtext/comma-separated-valuespermeability_h2.csvtext/comma-separated-valuespermeability_h2.csvtext/comma-separated-valuespermeability_h2.csvtext/comma-separated-valuespermeability_h2.csvtext/comma-separated-valuespermeability_h2.csvtext/comma-separated-valuespermeability_h2.csvtext/comma-separated-valuespermeability_h2.csvtext/comma-separated-valuespermeability_h2.csvtext/comma-separated-valuespermeability_h2.csvtext/comma-separated-valuespermeability_h2.csvtext/comma-separated-valuespermeability_h2.csvtext/comma-separated-valuespermeability.svgimage/svg+xmlpermeability.svgimage/svg+xmlpermeability.svgimage/svg+xmlpermeability.svgimage/svg+xmlpermeability.svgimage/svg+xmlpermeability.svgimage/svg+xmlpermeability.svgimage/svg+xmlpermeability.svgimage/svg+xmlpermeability.svgimage/svg+xmlpermeability.svgimage/svg+xmlpermeability.svgimage/svg+xmlpermeability.svgimage/svg+xmlpermeability.svgimage/svg+xmlpermeability.svgimage/svg+xmlpermeability.txttext/plainpermeability.txttext/plainpermeability.txttext/plainpermeability.txttext/plainpermeability.txttext/plainpermeability.txttext/plainpermeability.txttext/plainpermeability.txttext/plainpermeability.txttext/plainpermeability.txttext/plainpermeability.txttext/plainpermeability.txttext/plainpermeability.txttext/plainpermeability.txttext/plainpermeation.svgimage/svg+xmlpermeation.svgimage/svg+xmlpermeation.svgimage/svg+xmlpermeation.svgimage/svg+xmlpermeation.svgimage/svg+xmlpermeation.svgimage/svg+xmlpermeation.svgimage/svg+xmlpermeation.svgimage/svg+xmlpermeation.svgimage/svg+xmlpermeation.svgimage/svg+xmlpermeation.svgimage/svg+xmlpermeation.svgimage/svg+xmlpermeation.svgimage/svg+xmlpermeation.svgimage/svg+xmlPixel_Info.txttext/plainplotEtaF_HorizontalAlignment.pytext/x-pythonplotIVCurves_EtaF.pytext/x-pythonplotIVCurves_HorizontalAlignment.pytext/x-pythonplotSolutionGasCrossOver.pytext/x-pythonplotSolutionParasiticCurrent.pytext/x-pythonPost-operated_Diffraction.dm3application/octet-streamPost-operated_Diffraction.tifimage/tiffPost-operated_HRTEM.dm3application/octet-streamPost-operated_HRTEM.tifimage/tiffPost-operated_SEM_1.jpgimage/jpegPost-operated_SEM_EDS_F.jpgimage/jpegPost-operated_SEM_EDS_Ir.jpgimage/jpegPost-operated_SEM.jpgimage/jpegPost-operated_STEM_EDS_C.tifimage/tiffPost-operated_STEM_EDS_F.tifimage/tiffPost-operated_STEM_EDS_Ir.tifimage/tiffPost-operated_STEM.tifimage/tiffpressure_ppm_H2.svgimage/svg+xmlpressure_ppm_H2.svgimage/svg+xmlpressure_ppm_H2.svgimage/svg+xmlpressure_ppm_H2.svgimage/svg+xmlpressure_ppm_H2.svgimage/svg+xmlpressure_ppm_H2.svgimage/svg+xmlpressure_ppm_H2.svgimage/svg+xmlpressure_ppm_H2.svgimage/svg+xmlpressure_ppm_H2.svgimage/svg+xmlpressure_ppm_H2.svgimage/svg+xmlpressure_ppm_H2.svgimage/svg+xmlpressure_ppm_H2.svgimage/svg+xmlpressure_ppm_H2.svgimage/svg+xmlpressure_ppm_H2.svgimage/svg+xmlpressure.svgimage/svg+xmlpressure.svgimage/svg+xmlpressure.svgimage/svg+xmlpressure.svgimage/svg+xmlpressure.svgimage/svg+xmlpressure.svgimage/svg+xmlpressure.svgimage/svg+xmlpressure.svgimage/svg+xmlpressure.svgimage/svg+xmlpressure.svgimage/svg+xmlpressure.svgimage/svg+xmlpressure.svgimage/svg+xmlpressure.svgimage/svg+xmlpressure.svgimage/svg+xmlREADME.md.txttext/plainREADME.txttext/plainREADME.txttext/plainREADME.txttext/plainREADME.txttext/plainREADME.txttext/plainREADME.txttext/plainREADME.txttext/plainREADME.txttext/plainrequirements.txttext/plainVeryLRS.csvtext/csvvoltageHP.npyapplication/octet-streamvoltageHRS.npyapplication/octet-streamvoltageLP.npyapplication/octet-streamvoltageLRS.npyapplication/octet-streamvoltageMP.npyapplication/octet-streamvoltageVeryLRS.npyapplication/octet-stream