TUNING WATER MANAGEMENT IN PEM FUEL CELLS ROLE OF CARBONS AND GDL DESIGN REVISITED

摘要

Water management in proton exchange membrane fuel cells (PEMFCs) is one of the key factors which limit both power density and the durability [1, 2]. Particular challenges occur in the field of automotive propulsion applications, where different operation regimes (cold start, start-stop, e.g.) and dynamic load cycles have to be supported. This gives rise to substantial differences with respect to temperature and water distribution/saturation which have to be addressed by smart operation strategies, as well as optimized and robust cell components.