Data publication: Boosting electrode performance and bubble management via Direct Laser Interference Patterning

<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>
</ul>

<p>直接激光干涉图案化是一种有前景的方法，用于构建碱性水电解的电极结构，以提升电极性能。通过增加电化学活性表面积并应用超亲水表面结构，可以显著降低过电位。本数据集从电极电位、脱离气泡大小和成核位点数量等方面，对比了三种不同的空间周期和长宽比，即结构深度与周期的比值，在施加电流密度为<em><strong>j</strong> = 10、31.62和100 mA/cm&sup2;</em>的情况。电解液为<em><strong>1 M KOH</strong></em>。所有实验均在环境条件下进行（<em><strong>T</strong> = 293 K，<em>p</em> = 1 bar）。</p>

<p><strong>A.) <em>Data.zip</em>的描述：</strong></p>

<p>所有进行的实验的概述在文件<em><strong>Summary.csv</strong></em>中给出。数据分析如相应期刊出版物《通过直接激光干涉图案化提升电极性能和气泡管理》所述。每个数据集存储在.hdf5文件中，相关元数据整合到.hdf5文件中的组/数据集属性中。数据文件按以下组结构组织：</p>

<ul>
<li>电化学测量数据
<ul>
<li>恒电流测量数据</li>
<li>CV双层电容</li>
<li>LSV起始电位</li>
</ul>
</li>
<li>结果
<ul>
<li>检测到的气泡侧视图</li>
<li>检测到的气泡俯视图</li>
</ul>
</li>
<li><em>侧视图原始图像（仅适用于<em><strong>SH2_LS_DoE_01.hdf5</strong></em>）</em></li>
<li><em>俯视图原始图像（仅适用于<em><strong>SH2_LS_DoE_01.hdf5</strong></em>）</em></li>
</ul>

<p>除包含未处理图像的单个综合数据集（<em><strong>SH2_LS_DoE_01.hdf5</strong></em>）外，所有进行的测量的剩余原始图像均可根据请求提供。</p>

<p><strong>B.) <em>Videos.zip</em>的描述：</strong></p>

<p>在电流密度为<em><strong>j</strong> = 100 mA/cm&sup2;</em>的情况下，提供了非结构化和激光结构化电极的示例视频，包括侧视图和俯视图。提供的特征视频按照以下方案命名：</p>

<ul>
<li><em>视角_电极_电流密度</em></li>
<li><em>例如：Sideview_#1_NSE_100mAcm-2</em></li>
</ul>}