Synopsis
Hydrogen fuel cells, particularly high-temperature proton exchange membrane fuel cells (HT-PEMFCs), offer a promising carbon-neutral solution for heavy-duty vehicles (HDVs). HT-PEMFCs operate with lower-purity hydrogen and smaller heat exchangers due to their elevated temperature. However, state-of-the-art phosphoric acid-doped PBI membranes face performance degradation over time. This study evaluates novel ion-pair-based membranes (IPMs) and reference PBI-based membranes through 100-hour accelerated stress tests at 160 °C. In-situ techniques like polarization curves and EIS, alongside ex-situ SEM analysis, were used.
