January 28, 2025 Dataset Open Access

Rox, Hannes; Ränke, Fabian; Zschach, Lis Geraldine; Yang, Xuegeng; Mutschke, Gerd; Eckert, Kerstin; Lasagni, Andrés Fabián; Baumann, Robert

DataCite XML Export

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  <identifier identifierType="DOI">10.14278/rodare.3330</identifier>
  <creators>
    <creator>
      <creatorName>Rox, Hannes</creatorName>
      <givenName>Hannes</givenName>
      <familyName>Rox</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-2826-6903</nameIdentifier>
      <affiliation>nstitute of Fluid Dynamics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, Dresden, 01328 Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Ränke, Fabian</creatorName>
      <givenName>Fabian</givenName>
      <familyName>Ränke</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0009-0001-4313-9753</nameIdentifier>
      <affiliation>Institute of Manufacturing, Technische Universität Dresden, 01062 Dresden, Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Zschach, Lis Geraldine</creatorName>
      <givenName>Lis Geraldine</givenName>
      <familyName>Zschach</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-9509-7487</nameIdentifier>
      <affiliation>Institute of Manufacturing, Technische Universität Dresden, 01062 Dresden, Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Yang, Xuegeng</creatorName>
      <givenName>Xuegeng</givenName>
      <familyName>Yang</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-4617-0713</nameIdentifier>
      <affiliation>nstitute of Fluid Dynamics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, Dresden, 01328 Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Mutschke, Gerd</creatorName>
      <givenName>Gerd</givenName>
      <familyName>Mutschke</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-7918-7474</nameIdentifier>
      <affiliation>nstitute of Fluid Dynamics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, Dresden, 01328 Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Eckert, Kerstin</creatorName>
      <givenName>Kerstin</givenName>
      <familyName>Eckert</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-9671-8628</nameIdentifier>
      <affiliation>nstitute of Fluid Dynamics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, Dresden, 01328 Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Lasagni, Andrés Fabián</creatorName>
      <givenName>Andrés Fabián</givenName>
      <familyName>Lasagni</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-4333-4636</nameIdentifier>
      <affiliation>Institute of Manufacturing, Technische Universität Dresden, 01062 Dresden, Germany</affiliation>
    </creator>
    <creator>
      <creatorName>Baumann, Robert</creatorName>
      <givenName>Robert</givenName>
      <familyName>Baumann</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-8589-4685</nameIdentifier>
      <affiliation>Institute of Manufacturing, Technische Universität Dresden, 01062 Dresden, Germany</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Data publication: Dual wetting electrode surfaces for alkaline water electrolysis</title>
  </titles>
  <publisher>Rodare</publisher>
  <publicationYear>2025</publicationYear>
  <subjects>
    <subject>Alkaline water electrolysis</subject>
    <subject>Hydrogen evolution reaction</subject>
    <subject>Bubble dynamics</subject>
    <subject>Dual wetting</subject>
    <subject>Direct laser writing</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2025-01-28</date>
  </dates>
  <language>en</language>
  <resourceType resourceTypeGeneral="Dataset"/>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://rodare.hzdr.de/record/3330</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsIdenticalTo">https://www.hzdr.de/publications/Publ-40874</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsReferencedBy">https://www.hzdr.de/publications/Publ-41120</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.14278/rodare.3329</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://rodare.hzdr.de/communities/energy</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://rodare.hzdr.de/communities/fwd</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://rodare.hzdr.de/communities/hzdr</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://rodare.hzdr.de/communities/rodare</relatedIdentifier>
  </relatedIdentifiers>
  <version>1</version>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;Tuning the electrode surfaces for better bubble management is a promising approach to increase the efficiency of alkaline water electrolysis. Therefore, Direct Laser Writing was used to structure Nickel electrodes with a dual wetting surface. The applied pillar-like structure combines superhydrophilic behavior and strong spreading of the liquid across the electrode with hydrophobic bubble nucleation sites. In addition, the electrochemically active surface area is increased by a factor of 9. As a result, the overpotential has been significantly reduced, while the size of the detached bubble has increased. The present data set compares three different electrodes, a non-structured reference electrode and two laser structured electrodes with different depths of the structure, at applied current densities of&lt;strong&gt; &lt;em&gt;j&lt;/em&gt; = -20, -50 and -100 mA/cm&amp;sup2;&lt;/strong&gt; in terms of electrode potential, detached bubble size and number of nucleation sites. As electrolyte &lt;strong&gt;1 M KOH&lt;/strong&gt; was used. All experiments were carried out under ambient conditions (&lt;strong&gt;&lt;em&gt;T&lt;/em&gt; = 293 K,&lt;em&gt;p&lt;/em&gt; = 1 bar&lt;/strong&gt;).&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Description of &lt;em&gt;Data.zip&lt;/em&gt;:&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;An overview of all performed experiments is given in the file &lt;strong&gt;&lt;em&gt;Summary.csv&lt;/em&gt;&lt;/strong&gt;. The data is analyzed as described in the corresponding journal publication &lt;strong&gt;&lt;em&gt;Dual wetting electrode surfaces for alkaline water electrolysis&lt;/em&gt;&lt;/strong&gt;. Each data set is stored in a .hdf5-file, with the relevant metadata incorporated into the attributes assigned to the groups/datasets within the .hdf5-file. The data files are structured in groups as follows:&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;Electrochemical Measurement Data
	&lt;ul&gt;
		&lt;li&gt;Galvanostatic Measurement Data&lt;/li&gt;
		&lt;li&gt;CV double-layer capacitance&lt;/li&gt;
		&lt;li&gt;LSV onset potential&lt;/li&gt;
	&lt;/ul&gt;
	&lt;/li&gt;
	&lt;li&gt;Results
	&lt;ul&gt;
		&lt;li&gt;Detected Bubbles Sideview&lt;/li&gt;
	&lt;/ul&gt;
	&lt;/li&gt;
	&lt;li&gt;&lt;em&gt;Sideview Raw Images (only for &lt;strong&gt;SH2_LS_Pil_01.hdf5&lt;/strong&gt;)&lt;/em&gt;&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;With the exception of a single comprehensive data set comprising unprocessed images (&lt;strong&gt;SH2_LS_Pil_01.hdf5&lt;/strong&gt;), the remaining raw images from all performed measurements can be made available upon request.&lt;/p&gt;</description>
    <description descriptionType="Other">This project is supported by the Federal State of Saxony in terms of the "European Regional Development Fund" (H2-EPF-HZDR), the Helmholtz Association Innovation pool project "Solar Hydrogen", the Hydrogen Lab of the School of Engineering of TU Dresden, and BMBF (project ALKALIMIT, grant no. 03SF0731A).</description>
  </descriptions>
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