Dr. Jan Van herle is an electrochemist specialised in fuel cells and electrolysis since over 30 years. After a Ph.D. in the field at EPFL Switzerland in 1993, he did a postdoc in Japan and returned to EPFL to lead a research group activity. Switching to Mechanical Engineering in 2000 and founding a fuel cell start-up the same year, he built up a Laboratory that covers aspects from nanometric interfaces all the way to entire system optimisation, combining detailed experimental diagnostics and validation with multi-scale multi-physics modelling. His Group produced so far 26 PhD theses, 95 master theses and over 400 publications, contributing to understanding performance durability and improving designs and characterisation of fuel cell and electrolyzer devices.