Toward Understanding Catalyst Layer Deposition Processes and Distribution in Anodic Porous Transport Electrodes in Proton Exchange Membrane Water Electrolyzers

Finding the optimum structure in porous transport electrodes (PTEs) for proton exchange membrane water electrolyzer anodes is one of central current technological challenges. Both layer (PTL) and its interaction with catalyst are crucial finding this structure. In regard, manufacturing on top a PTL as structure-building process must be understood to find improved electrode structures. This work presents PTE tomography where ink directly processed PTL. The distribution anodic PTEs analyzed compared via X-ray microtomography cross-sectional imaging embedded samples. majority lies within first 100 µm PTE. Considering penetration depth membrane, maximum 60% effectively used. For time, voxel-based deposition model created that based simple assumptions process. fits very well previous tomographic analysis. future, will allow more profound insight into an important prerequisite future design PTEs.