B5: Correlative Electron and X-ray Tomography of Hierarchical Electrodes for Water Electrolysis
Correlative Electron and X-ray Tomography of Hierarchical Electrodes for Water Electrolysis
This doctoral project aims to establish a comprehensive correlative imaging workflow to unravel structure–functionality relationships in proton exchange membrane water electrolyzers (PEMWE). The candidate will combine high-resolution electron microscopy with multiscale X-ray tomography to quantitatively characterize hierarchical electrode architectures across several length scales. Structural parameters such as pore-size distribution, tortuosity, and catalyst–support interfaces will be correlated with electrochemical performance. Advanced techniques including 4D-STEM, STEM-EELS, and electron tomography will be used to analyze crystallinity, oxidation states, and degradation processes in catalyst layers and membranes. X-ray micro- and nano-CT will provide complementary 3D insights at larger scales, linked via AI-assisted data fusion. The integrated approach will deliver a quantitative understanding of how electrode morphology governs efficiency and stability, paving the way for data-driven optimization of sustainable hydrogen production systems.
