Data Associated with "Improving Uniformity and Durability of Low-Loaded Slot-Die-Coated PEM Water Electrolyzer Anodes"

Data for "Improving Uniformity and Durability of Low-Loaded Slot-Die-Coated PEM Water Electrolyzer Anodes.” This work addresses previous challenges with manufacturing slot-die-coated proton exchange membrane water electrolyzer anodes of low iridium loading and quantifies associated device durability improvements. The dataset provided herein comprises photographic images of the anodes, optical microscopy, electron microscopy, and raw data for performance evaluation. 

24 Data Resources
Name Size Type Resource Description History
Microgravure 0.21 mgIr/cm2 Polarization Curves 17 KB Data Polarization curves and high frequency resistances collected for the Microgravure MEA (0.21 mgIr/cm2) as a function of current density at beginning of life, 250 hours, 527 hours, 815 hours, and 1015 hours.
Slot die 0.4 mgIr/cm2 Polarization Curves 17 KB Data Polarization curves and high frequency resistances collected for one of three slot die MEAs (0.40 mgIr/cm2) as a function of current density at beginning of life, 250 hours, 527 hours, 815 hours, and 1015 hours.
Slot die 0.26 mgIr/cm2 Polarization Curves 17 KB Data Polarization curves and high frequency resistances collected for one of three slot die MEAs (0.26 mgIr/cm2) as a function of current density at beginning of life, 250 hours, 527 hours, 815 hours, and 1015 hours.
Slot die 0.18 mgIr/cm2 Polarization Curves 17 KB Data Polarization curves and high frequency resistances collected for one of three slot die MEAs (0.18 mgIr/cm2) as a function of current density at beginning of life, 250 hours, 527 hours, 815 hours, and 1015 hours.
Slot-die-coated anode with large coating gap 12.9 MB Image A backlit image of a slot-die-coated anode coated with large coating gap onto an ETFE substrate
Slot-die-coated anode with small coating gap 12.4 MB Image A backlit image of a slot-die-coated anode coated with small coating gap onto an ETFE substrate
Microgravure Anode Decal Optical Microscopy 90 MB Document Transmitted light optical microscope image of Microgravure anode decal (0.21 mgIr/cm2) at 100x magnification
Slot Die Anode Decal Optical Microscopy (0.4 mgIr/cm2) 94.9 MB Document Transmitted light optical microscope image of one of three slot die coated anode decals (0.40 mgIr/cm2) at 100x magnification
Slot Die Anode Decal Optical Microscopy (0.26 mgIr/cm2) 96.4 MB Document Transmitted light optical microscope image of one of three slot die coated anode decal (0.26 mgIr/cm2) at 100x magnification
Slot Die Anode Decal Optical Microscopy (0.18 mgIr/cm2) 97.1 MB Document Transmitted light optical microscope image of one of three slot die coated anode decals (0.18 mgIr/cm2) at 100x magnification
Potentiostatic EIS Data 151 KB Data Non-faradaic potentiostatic EIS data collected for the Microgravure anode and three slot die coated anodes. Each sheet is a separate dataset corresponding to one of four MEAs. Data sets are differentiated by coating method, anode iridium loading (mgIr/cm2), and time point at which they were collected.
Microgravure STEM Micrograph 1 45 KB Document STEM micrograph image of Microgravure-coated MEA (0.21 mgIr/cm2) cross section at anode-membrane interface. This image was taken at a region where porous transport layer contacted the anode electrode.
Microgravure STEM Micrograph 2 45 KB Document A second STEM micrograph image of Microgravure-coated MEA (0.21 mgIr/cm2) cross section at anode-membrane interface. This image was taken at a region where porous transport layer contacted the anode electrode.
Microgravure STEM Micrograph 3 56 KB Document STEM micrograph image of Microgravure-coated MEA (0.21 mgIr/cm2) cross section at anode-membrane interface. This image was taken at a region not in contact with the porous transport layer.
Slot Die STEM Micrograph (0.4 mgIr/cm2) 52 KB Document STEM micrograph image of one of three slot die MEAs (0.40 mgIr/cm2) cross section at anode-membrane interface. This image was taken at a location in contact with the porous transport layer.
Slot Die STEM Micrograph (0.26mgIr/cm2) 43 KB Document STEM micrograph image of one of three slot die MEAs (0.26 mgIr/cm2) cross section at anode-membrane interface. This image was taken at a location in contact with the porous transport layer.
Slot Die STEM Micrograph (0.18 mgIr/cm2) 55 KB Document STEM micrograph image of one of three slot die MEAs (0.18 mgIr/cm2) cross section at anode-membrane interface. This image was taken at a location in contact with the porous transport layer.
Microgravure MEA Anode (0.21 mgIr/cm2) Optical Microscopy 17.9 MB Document Mixed lighting mode optical microscopy image at 500x magnification of Microgravure MEA's anode (0.21 mgIr/cm2).
Slot Die MEA Anode (0.4 mgIr/cm2) Optical Microscopy 17.9 MB Document Mixed lighting mode optical microscopy image at 500x magnification of one of three slot die MEAs anode (0.40 mgIr/cm2).
Slot Die MEA Anode (0.26 mgIr/cm2) Optical Microscopy 17.9 MB Document Mixed lighting mode optical microscopy image at 500x magnification of one of three slot die MEAs anodes (0.26 mgIr/cm2).
Slot Die MEA Anode (0.18 mgIr/cm2) Optical Microscopy 17.9 MB Document Mixed lighting mode optical microscopy image at 500x magnification of one of three slot die MEA anodes (0.18 mgIr/cm2).
Beginning of Life Faradaic EIS Data 57 KB Data Beginning of life faradaic electrochemical impedance spectroscopy data organized by coating method, MEA anode loading, and DC current density
End of Test Faradaic EIS Data 57 KB Data End of Test faradaic electrochemical impedance spectroscopy data organized by coating method, MEA anode loading, and DC current density
Cell Voltages During Galvanostatic Holds 58.8 MB Data Cell voltages recorded during the 3A/cm2 galvanostatic holds. The holds from first to last are organized sequentially into different sheets. Cell voltage for each of the four MEAs comprise different columns in each sheet that are labeled by coating method and anode loading.
Keywords
roll-to-roll
water electrolysis
manufacturing
Submitted
•  Sep  • 23 2026
 
Chance Parrish
303-630-5789
Center 5900
Author Information
Chance Parrish, National Laboratory of the Rockies
Chaiwat Engtrakul, National Laboratory of the Rockies, ORCID iD: 0000-0002-8773-0668
Radhika Iyer, National Laboratory of the Rockies
Haoran Yu, Oak Ridge National Laboratory
James L. Young, National Laboratory of the Rockies, ORCID iD: 0000-0001-7291-0079
Anirban Roy, National Laboratory of the Rockies
Sarah Blair, National Laboratory of the Rockies, ORCID iD: 0000-0001-6680-0199
Elliot Padgett, National Laboratory of the Rockies
Ken Hansen, National Laboratory of the Rockies
Andrew Kominowski, National Laboratory of the Rockies
Guido Bender, National Laboratory of the Rockies, ORCID iD: 0000-0003-3777-4707
Scott Mauger, National Laboratory of the Rockies, ORCID iD: 0000-0003-2787-5029
Cite This Dataset
Parrish, Chance, Chaiwat Engtrakul, Radhika Iyer, Haoran Yu, James L. Young, Anirban Roy, Sarah Blair, Elliot Padgett, Ken Hansen, Andrew Kominowski, Guido Bender, and Scott Mauger. 2026. "Data Associated with "Improving Uniformity and Durability of Low-Loaded Slot-Die-Coated PEM Water Electrolyzer Anodes"." NLR Data Catalog. Golden, CO: National Laboratory of the Rockies. Last updated: October 2, 2026. DOI: 10.7799/17067917.
About This Dataset
335
10.7799/17067917
NLR/JA-5900-100144
Public
10/02/2026
DOE Project
Roll-to-Roll Consortium
Facilities
Energy Systems Integration Facility (ESIF)
High Performance Computing Center (HPC)
Materials & Chemical Science & Technology (MCS)
Funding Organization
Department of Energy (DOE)
Sponsoring Organization
USDOE Office of Critical Minerals and Energy Innovation (CMEI), Office of Energy Technology (E-Tech). Alternative Fuels and Feedstocks Office
Research Areas
Hydrogen and Fuel Cells
License
View License
Digital Object Identifier
10.7799/17067917