Dataset Open Access

Data publication: Bubble size distribution and electrode coverage at porous nickel electrodes in a novel 3-electrode flow-through cell

Rox, Hannes; Bashkatov, Aleksandr; Yang, Xuegeng; Loos, Stefan; Mutschke, Gerd; Gerbeth, Gunter; Eckert, Kerstin

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    <subfield code="a">Data publication: Bubble size distribution and electrode coverage at porous nickel electrodes in a novel 3-electrode flow-through cell</subfield>
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    <subfield code="a">&lt;p&gt;Porous materials are frequently used as e.g. electrodes or porous transport layers in various types of electrolyzers. A better understanding of the bubble dynamics on porous electrodes is especially important to optimize new electrolyzer designs like membraneless electrolyzers. The developed 3-electrode cell was optimized with regard to the analysis of the bubble nucleation, growth and detachment on the applied working electrode. Noteworthy in this regard is the 2-dimensional optical measurement system to characterize the bubble dynamics from the side and top. The cell provides a platform to run parametric studies in alkaline electrolytes. The present data set compares three different expanded nickel metals at applied current densities of |&lt;em&gt;j&lt;/em&gt;|= 10, 20, 50, 100 or 200 mA/cm&amp;sup2; and flow rates of ̇&lt;em&gt;V̇&lt;/em&gt; = 0 or 5 ml/min. As electrolyte 1 M KOH is used. An overview of all performed experiments and the main parameters (current density &lt;em&gt;j&lt;/em&gt; and flow rate &lt;em&gt;V̇&lt;/em&gt;) is given in the file &lt;strong&gt;&lt;em&gt;Overview of all performed experiments.pdf&lt;/em&gt;&lt;/strong&gt;. The data is analyzed as described in the corresponding journal publication &lt;strong&gt;&lt;em&gt;Bubble size distribution and electrode coverage at porous nickel electrodes in a novel 3-electrode flow-through cell&lt;/em&gt;&lt;/strong&gt;. For each parameter set 3 data sets are given to ensure statistical confidence. Each data set, stored as .hdf5-file, is structured in groups as follows:&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;Electrochemical Measurement Data&lt;/li&gt;
	&lt;li&gt;Sideview Raw Images&lt;/li&gt;
	&lt;li&gt;Topview Raw Images&lt;/li&gt;
	&lt;li&gt;Results
	&lt;ul&gt;
		&lt;li&gt;Detected Bubbles&lt;/li&gt;
		&lt;li&gt;Electrode Coverage&lt;/li&gt;
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Publication date:
September 2, 2022
DOI:
10.14278/rodare.1845

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Keyword(s):
bubble dynamics alkaline electrolysis porous electrodes membraneless electrolyzer machine learning additive manufacturing
Related identifiers:
Identical to:
https://www.hzdr.de/publications/Publ-35144
Referenced by:
https://www.hzdr.de/publications/Publ-35344
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License (for files):
Creative Commons Attribution 4.0 International

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