A5088257669- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Machine Learning in Materials Science
- Advanced Battery Technologies Research
- Hydrocarbon exploration and reservoir analysis
- Advanced Electron Microscopy Techniques and Applications
- Catalysis and Oxidation Reactions
- Electron and X-Ray Spectroscopy Techniques
Technical University of Munich
2020-2024
The hydrogen oxidation and evolution reaction (HOR/HER) has been widely investigated due to its importance for a broad variety of applications especially in electrolysis fuel cells. However, owing extremely fast kinetics, kinetic data can only be obtained with experimental setups that provide very mass transport, so the effect partial pressure (p H2 ) limitations at high overpotentials are not yet fully understood. Here we report detailed investigations on temperature dependence HOR/HER...
In catalysis research, the amount of microscopy data acquired when imaging dynamic processes is often too much for non-automated quantitative analysis. Developing machine learned segmentation models challenged by requirement high-quality annotated training data. We thus substitute expert-annotated with a physics-based sequential synthetic model. study environmental SEM (ESEM) collected from isopropanol oxidation to acetone over cobalt oxide. Upon applying temperature program during reaction...
Zero-emission electricity production for stationary or mobile applications can be realized by PEM fuel cells (PEMFCs), making it an important constituent a renewable energy transition. Especially relevant in heavy-duty applications, high power output at low current densities (related to mass activity, MA) under dry conditions is necessary meet the efficiency targets. [1] In general, activity of Pt/C catalyst negatively affected ionomer poisoning, which describes adsorption endgroups onto...
Abstract In catalysis research, the amount of microscopy data acquired when imaging dynamic processes is often too much for nonautomated quantitative analysis. Developing machine learned segmentation models challenged by requirement high-quality annotated training data. We thus substitute expert-annotated with a physics-based sequential synthetic model. study environmental scanning electron (ESEM) collected from isopropanol oxidation to acetone over cobalt oxide as an example. Upon applying...
Voltage-controlled in situ diagnostics like cyclic voltammetry (CV) are commonly used to characterize membrane electrode assemblies (MEAs) single-cell proton exchange fuel cells (PEMFCs) and monitor MEA degradation over operating time. Their application, however, is more complex for characterizing individual a PEMFC stack, depending on stack design the capability of cell test station. Consequently, several studies have demonstrated facile easily adaptable alternative by using galvanostatic...
The hydrogen oxidation and evolution reaction (HOR/HER) has been widely investigated in electrocatalysis due to its importance for a broad variety of applications especially electrolysis fuel cells (FC). While the HOR/HER rates on platinum alloy catalysts alkaline environment can be determined precisely with rotating disk electrode (RDE) measurements, 1-3 this is not possible at low pH two orders magnitude higher that far exceed slow mass transport limited afforded by RDE configuration. 4 As...