<?xml version='1.0' encoding='UTF-8'?><codeBook xmlns="ddi:codebook:2_5" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="ddi:codebook:2_5 https://ddialliance.org/Specification/DDI-Codebook/2.5/XMLSchema/codebook.xsd" version="2.5"><docDscr><citation><titlStmt><titl>FZJ 1056 cm² PEM electrolysis stack</titl><IDNo agency="DOI">doi:10.26165/JUELICH-DATA/IUF96L</IDNo></titlStmt><distStmt><distrbtr source="archive">Jülich DATA</distrbtr><distDate>2026-01-27</distDate></distStmt><verStmt source="DVN"><version date="2026-08-25" type="RELEASED">2</version></verStmt><biblCit>Hoppe, Eugen; Holger Janßen; Sebastian Holtwerth; Martin Müller, 2026, "FZJ 1056 cm² PEM electrolysis stack", https://doi.org/10.26165/JUELICH-DATA/IUF96L, Jülich DATA, V2</biblCit></citation></docDscr><stdyDscr><citation><titlStmt><titl>FZJ 1056 cm² PEM electrolysis stack</titl><IDNo agency="DOI">doi:10.26165/JUELICH-DATA/IUF96L</IDNo></titlStmt><rspStmt><AuthEnty affiliation="Forschungszentrum Jülich GmbH, IET-4 Electrochemical Process Engineering">Hoppe, Eugen</AuthEnty><AuthEnty affiliation="Forschungszentrum Jülich GmbH, IET-4 Electrochemical Process Engineering">Holger Janßen</AuthEnty><AuthEnty affiliation="Forschungszentrum Jülich GmbH, IET-4 Electrochemical Process Engineering">Sebastian Holtwerth</AuthEnty><AuthEnty affiliation="Forschungszentrum Jülich GmbH, IET-4 Electrochemical Process Engineering">Martin Müller</AuthEnty></rspStmt><prodStmt/><distStmt><distrbtr source="archive">Jülich DATA</distrbtr><contact affiliation="Forschungszentrum Jülich GmbH, IET-4 Electrochemical Process Engineering" email="e.hoppe@fz-juelich.de">Hoppe, Eugen</contact><depositr>Hoppe, Eugen</depositr><depDate>2025-12-12</depDate></distStmt></citation><stdyInfo><subject><keyword>Engineering</keyword></subject><abstract>The data set under consideration provides the technical drawings of a PEM electrolysis stack with an active cell area of 1056 cm². The stack was developed at the Institute of Energy Technologies (IET-4) at Forschungszentrum Jülich. The primary function of this stack is to facilitate the precise and meticulous testing of diverse components utilized in the PEM electrolysis process, employing a technical scale for accurate measurement.</abstract><sumDscr/></stdyInfo><method><dataColl><sources/></dataColl><anlyInfo/></method><dataAccs><notes type="DVN:TOU" level="dv">CC0 Waiver</notes><notes type="DVN:TOA" level="dv">The dataset was published prematurely. Public access will be granted as soon as our revision process is complete.</notes><setAvail/><useStmt/></dataAccs><othrStdyMat><relPubl><citation><titlStmt><IDNo agency="doi">10.1016/j.apenergy.2026.128538</IDNo></titlStmt><biblCit>Eugen Hoppe, Holger Janßen, Sebastian Holtwerth, Michael Hehemann, Walter Zwaygardt, Martin Müller,&#xd;
The significance of a polarization curve - analysis of a 60-cell polymer electrolyte water electrolysis stack,&#xd;
Applied Energy,&#xd;
Volume 426, Part A,&#xd;
2026,&#xd;
128538</biblCit></citation><ExtLink URI="https://doi.org/10.1016/j.apenergy.2026.128538"/></relPubl></othrStdyMat></stdyDscr><otherMat ID="f56743" URI="https://data.fz-juelich.de/api/access/datafile/56743" level="datafile"><labl>00_FZJ 1056cm² PEM electrolysis stack.pdf</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">application/pdf</notes></otherMat><otherMat ID="f56201" URI="https://data.fz-juelich.de/api/access/datafile/56201" level="datafile"><labl>02_end_plate.pdf</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">application/pdf</notes></otherMat><otherMat ID="f56191" URI="https://data.fz-juelich.de/api/access/datafile/56191" level="datafile"><labl>02_end_plate.stp</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">application/octet-stream</notes></otherMat><otherMat ID="f56193" URI="https://data.fz-juelich.de/api/access/datafile/56193" 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