Semester Projects | Spring 2026
(can be adapted to Bachelor or Master level)
Evaluating parameters for building pore network models of gas diffusion electrodes used in CO2 electrolyzers
AvailableGas diffusion electrodes (GDEs) are used in various electrochemical systems, including CO2 electrolyzers, for the controllable transport of the gaseous reactants. They consist of a microporous layer (MPL) on which a catalyst layer is deposited. FIB-SEM tomography is a technique that enables 3D reconstruction of the MPL, allowing the extraction of key material properties. Constructing a pore network model (PNM) from the 3D reconstruction allows modelling of gas and liquid transport in the material. This project aims to evaluate how the tuneable parameters in building the PNM may affect the results of the model. The project will involve the use of the python package OpenPNM. Prior experience with Python scripting would be helpful, but it is not a requirement.
Contact: Ms. Richa RajadhyaxQuantifying molecular oxygen evolved from various iridium-based catalysts
AvailableThe oxygen evolution reaction (OER) is a key bottleneck in water splitting and remains a major focus in catalyst research. In situ techniques such as in situ scanning transmission electron microscopy with electron energy loss spectroscopy (STEM-EELS) can provide valuable insights into catalyst dynamics and molecular oxygen evolution, but validation with conventional methods is crucial. In this project, the student will optimize bench-top conditions to trigger oxygen release from iridium-based catalysts under electrochemical OER conditions and quantify the evolved O2 using gas chromatography-mass spectrometry (GC-MS). Prior experience with electrochemistry or GC-MS would be beneficial.
Contact: Ms. Elizaveta ShcherbachevaDesign of XPS-compatible MEMS chips using finite element modelling
AvailableIn situ techniques such as X-ray photoelectron spectroscopy (XPS) and liquid-phase transmission electron microscopy (LCTEM) offer powerful tools for studying catalyst evolution under operating conditions. However, implementing such methods requires specialized electrochemical cells that permit electron or X-ray transmission without significant signal distortion. While microelectromechanical systems (MEMS) chips with silicon nitride membranes are widely used for liquid-phase TEM, they are unsuitable for XPS. This project aims to optimize the design of new MEMS chips incorporating membranes with graphene windows for in situ XPS measurements. The student will design and simulate the membrane design (for example the size and shape) using finite element modelling within COMSOL Multiphysics software. Prior experience in simulation would be an advantage, but it is not necessary.
Contact: Ms. Elizaveta ShcherbachevaCycling of cathode materials in lithium-ion battery microcells
AvailableRechargeable lithium-ion batteries (LiBs) are currently utilized mainly in portable electronic devices and electric vehicles (EVs), with potential future applications to enhance energy sustainability. The cathode is particularly significant because it accounts for the most considerable weight fraction in LiB cells but degrades during operation. We propose investigating it using liquid-phase electron microscopy, which could provide insights into its degradation mechanism. Before doing so, we optimize microcell and cycling parameters by doing bench measurements. Thus, this project aims to prepare lithium-ion battery microcells and perform charge-discharge cycles within a liquid-phase electron microscopy holder. The microcell preparation includes ink preparation and its drop-casting on dedicated electrochemical chips. The student will then be trained to mount the microcell on a dedicated liquid-phase holder and perform charge-discharge cycling in a glovebox. Previous experience in electrochemical or battery systems is preferred but not mandatory. Battery measurements can have a long duration; some schedule flexibility is thus expected.
Contact: Dr. Morgan Binggeli