Fig. 7: HTO level tested in cell type 3 at different temperatures, current densities and KOH concentrations.
From: Sulfonated polybenzimidazole for low-alkalinity ion solvating membrane water electrolysis
a,b, HTO levels with 102-µm-thick 50SOPBI-act using 1 M KOH (a) and 2 M KOH solution (b). c, HTO levels with an 80-μm-thick Piperion membrane. Shaded area indicates a safe gas composition (50% below the lower explosion limit).
