project 08

In-situ environmental TEM studies of electro- and photo-electrochemical systems for water splitting

  • Prof. Dr. Christian Jooß, Universität Göttingen, Fakultät für Physik, Institut für Materialphysik

The main objective of this project is to gain deeper insights into the electrode processes of electro- and photo-electrochemical devices under water splitting operation. Since catalysts strongly change their atomic and electronic structure in their active state, in-situ studies of the atomic and electronic structure with high spatial resolution are required, in order to understand the involved mechanisms and to improve the selected catalyst materials.

The catalyst properties are strongly influenced by their microstructure, impurity level and interfaces to the electrode and buffer layers, all sensitively depending on the preparation.

Consequently, in addition to studies of thin film model systems, the study of electro-catalyst and electrode properties after integration into real (photo)-electrochemical devices is required. This also allow for the understanding of electrode and catalyst stability as well as mechanisms leading to corrosion processes.

Our central approach is in-situ ETEM study of the changes in atomic and electronic structure ETEM studies of electrodes and electro-catalysts.