Enhanced performance and durability of low catalyst loading PEM water electrolyser based on a short-side chain perfluorosulfonic ionomer

Tripling current density (>3 A·cm−2) with respect to the state of the art of commercial PEM electrolyser can be achieved also in the presence of a significant reduction, about 4-fold, of the total noble metal loading (0.5 mg·cm−2) while achieving high efficiency (>80%) and proper durability.260