Inhaltspezifische Aktionen

AG Dr. Henss

Welcome to the Research Group of Dr. Anja Henss

Interfacial Analysis of Energy Storage Materials

Our research activities focus on the detailed interfacial analysis of materials used in energy conversion and storage, in the context of the growing demand for renewable energy and the urge to reduce the human ecological footprint. We are interested in studying the intricate surface and interfacial properties of materials using time-of-flight secondary ion mass spectrometry (ToF-SIMS), X-ray photoelectron spectroscopy (XPS) and focused ion beam secondary electron microscopy (FIB-SEM), and performing extensive stability testing to gain a deeper understanding of the interfacial properties involved. I am also interested in transport experiments using SIMS to explore the fundamental mechanisms of ion conduction and transfer at interfaces. My group is developing in-situ experiments that allow real-time observation of processes in materials and at interfaces. Complementing electrochemical measurements, this holistic approach is essential for a fundamental understanding of the underlying processes and mechanisms and is the basis for the development of high performance and reliable battery cells.


ToF-SIMS surface images of Li/PEO:LiTFSI interface. Image by BSc A. Weiß

Our group focuses on the characterization of the lithium metal anode as well as on the analysis of cathode and anode active materials in cells with liquid and solid electrolytes. Furthermore, we work on polymer and hybrid electrolyte systems and their interface stability against the cathode and anode active materials.


Instrumental Analytics in the Life Sciences

3D reconstruction of a SIMS depth profile of a leaf. Image by BSc A. Krause

Within the framework of interdisciplinary collaborations, we aim to establish analytical methods originating from materials sciences for application in the field of biological and life sciences. One example is the close cooperation with the botany, in which we are investigating the salt tolerance of native and invasive rose species in more detail using imaging mass spectrometry.


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