High-temperature proton exchange membrane electrode assembly (HT-PEM MEA) represents a transformative advancement in electrochemical energy conversion, enabling operation at elevated current densities across a broad temperature range, including startup below 100 °C. This capability addresses critical limitations of conventional low-temperature PEM (LT-PEM) systems by reducing thermal management complexity and enabling deployment in heavy-duty and high-power applications. Furthermore, HT-PEM FC stacks operating above 120 °C facilitate the integration of advanced, compact cooling architectures, significantly reducing system weight and volume while improving overall efficiency.
Advent Technologies, in collaboration with the U.S. Department of Energy’s Los Alamos National Laboratory, is commercializing a next-generation HT-PEM technology that leverages strongly formed ion pairs between a charged polymer membrane and phosphoric acid. This unique approach delivers substantially higher current densities and markedly lower degradation rates compared to existing HT-PEM membrane electrode assemblies (MEAs). The technology’s robustness and performance open pathways for applications in sectors traditionally dominated by LT-PEM systems, while offering superior durability and thermal tolerance.
Advent holds exclusive licensing rights for aviation, marine, and portable power markets, positioning this innovation as a key enabler for lightweight, high-efficiency fuel cell systems in demanding environments. The combination of enhanced electrochemical performance, simplified thermal management, and extended operational range underscores the potential of this HT-PEM platform to redefine the landscape of fuel cell technology. Through the NICKEFFECT project and beyond, ADVENT is setting the stage for long-term growth and leadership in this promising sector, aligning its capabilities with a sustainable energy future.