This postdoctoral project aims to develop a novel PEM fuel cell architecture to decarbonize heavy-duty transport (trucks, maritime, rail, and aviation). Current PEMFCs require external humidification to maintain performance, as their polymer membrane needs near 100% humidity. Above 80°C, water management, and especially keeping high hydration level, becomes inefficient, limiting operating temperature and necessitating bulky cooling systems.

The CEA has patented an innovative architecture that doubles fluid inlets/outlets, enabling independent control of cell pairs (bicells). By reversing thermal gradients between the anode and cathode, this design optimizes internal water circulation, maximizing retention and reducing the need for external humidifiers. The goal is to validate this architecture through an instrumented bicell, operational within 1–2 years, combining modeling, experimental testing, and parameter optimization (flow rates, humidity, pressure, thermal gradients).

This project could lead to a new generation of high-temperature PEMFCs (>80°C) without humidifiers, simplifying integration into industrial applications. Results may yield publications and patents.