Dataset Open Access
Data publication: Boosting electrode performance and bubble management via Direct Laser Interference Patterning
Rox, Hannes;
Ränke, Fabian;
Mädler, Jonathan;
Marzec, Mateusz M.;
Sokolowski, Krystian;
Baumann, Robert;
Hamedi, Homa;
Yang, Xuegeng;
Mutschke, Gerd;
Urbas, Leon;
Lasagni, Andrés Fabián;
Eckert, Kerstin
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<subfield code="a">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).</subfield>
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<subfield code="a"><p>Direct Laser Intereference Patterning is a promising approach to structure electrodes for alkaline water electrolysis to improve the electrode performance. By increasing the electrochemical active surface area and apply a superhydrophilic surface structure, the overpotential could be decreased significantly. The present data set compares three different spatial period and aspect ratios, defined as the ratio between structure depth and period, at applied current densities of<strong> <em>j</em> = 10, 31.62 and 100 mA/cm&sup2;</strong> in terms of electrode potential, detached bubble size and number of nucleation sites. As electrolyte <strong>1 M KOH</strong> was used. All experiments were carried out under ambient conditions (<strong><em>T</em> = 293 K,<em>p</em> = 1 bar</strong>).</p>
<p><strong>A.) Description of <em>Data.zip</em>:</strong></p>
<p>An overview of all performed experiments is given in the file <strong><em>Summary.csv</em></strong>. The data is analyzed as described in the corresponding journal publication <em><strong>Boosting electrode performance and bubble management via Direct Laser Interference Patterning</strong></em>. 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:</p>
<ul>
<li>Electrochemical Measurement Data
<ul>
<li>Galvanostatic Measurement Data</li>
<li>CV double-layer capacitance</li>
<li>LSV onset potential</li>
</ul>
</li>
<li>Results
<ul>
<li>Detected Bubbles Sideview</li>
<li>Detected Bubbles Topview</li>
</ul>
</li>
<li><em>Sideview Raw Images (only for <strong>SH2_LS_DoE_01.hdf5</strong>)</em></li>
<li><em>Topview Raw Images (only for <strong>SH2_LS_DoE_01.hdf5</strong>)</em></li>
</ul>
<p>With the exception of a single comprehensive data set comprising unprocessed images (<strong>SH2_LS_DoE_01.hdf5</strong>), the remaining raw images from all performed measurements can be made available upon request.</p>
<p><strong>B.) Description of <em>Videos.zip</em>:</strong></p>
<p>Example videos for non-structured and laser-structured electrodes at a current density of <strong><em>j</em> = 100 mA/cm&sup2;</strong> are given for both, sideview and topview. The provided characteristic videos are named after following scheme:</p>
<ul>
<li><em>Perspective_Electrode_CurrentDensity</em></li>
<li><em>E.g.: Sideview_#1_NSE_100mAcm-2 </em></li>
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212
15
views
downloads
| All versions | This version | |
|---|---|---|
| Views | 212 | 212 |
| Downloads | 15 | 15 |
| Data volume | 258.6 GB | 258.6 GB |
| Unique views | 164 | 164 |
| Unique downloads | 13 | 13 |
- Publication date:
- October 29, 2024
- DOI:
-
- Keyword(s):
- Alkaline water electrolysis Bubble dynamics Direct laser interference patterning Oxygen evolution reaction
- Related identifiers:
- Identical to:
https://www.hzdr.de/publications/Publ-39830 - Communities:
- License (for files):
- Creative Commons Attribution 4.0 International