Stefan Freunberger is a professor at ISTA and heading the research group Material Electrochemistry. His research interests embrace new materials and understanding reaction mechanisms in electrochemical energy storage, focusing on the redox chemistry of main group elements. This includes alkaline-ion, metal-oxygen, and metal-S batteries, as well as organic electroactive materials and electrocatalysis. The group develops in-situ and ex-situ techniques based on spectroscopy, diffraction, and microscopy to understand the basic physical chemistry occurring at the bulk and interfaces. His research has been supported by an ERC Starting and Proof of Concept grant.