<?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="2026-01-28" type="RELEASED">1</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, V1</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. 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