13.10.2025

From September 17^th to 19^th, 2025, Maximilian Käfer from the Institute of Chemical Engineering and Environmental Technology, TU Graz, participated in the European Fuel Cells and Hydrogen Conference – Piero Lunghi Conference in Capri, Italy. The event brought together international experts from academia, industry, and policy to discuss advances and challenges in hydrogen and fuel cell technologies.

Maximilian Käfer presented his research titled “Performance Evaluation of a Copper Interdigitated Over-Humidification Sensor”, focusing on a low-cost diagnostic tool for detecting water accumulation and over-humidification in polymer electrolyte fuel cells (PEFCs). The developed flexible sensor, based on copper interdigitated electrodes on a polyimide substrate, enables real-time monitoring of condensation, moisture levels, and over-humidification. Test results demonstrated high sensitivity, fast response and recovery, and stable operation under fuel cell relevant conditions. This supports its potential use for improved fuel cell water management.

The conference featured high level keynotes on hydrogen policy, materials innovation, and system integration, emphasizing Europe’s roadmap toward a sustainable hydrogen economy.