We are a subgroup working on proton-conducting ceramic materials and their integration into new electrochemical devices. Based on fundamental studies of ion transport and structure–property relationships, we translate materials insights into functional energy technologies. Our research covers proton-conducting glucose fuel cells for biomedical implants, efficient and sustainable redox flow batteries using alternative membrane concepts, and novel thermal battery systems for waste-heat recovery and energy storage. Across these topics, we combine ceramic processing (pellets and tape-cast components) with advanced thin-film fabrication methods such as pulsed laser deposition (PLD) and spray pyrolysis, complemented by detailed materials characterization and a broad range of electrochemical testing methods to develop durable, high-performance devices for energy conversion and storage.