B. Sánchez Batalla, A. Laube, A. Hofer, T. Struckmann, J. Bachmann, C. Weidlich
Int. J. Hydrog. Energy, (2022) 47, 94, 29719, doi:10.1016/j.ijhydene.2022.09.159
Activity and durability of a(PEM) single cell, assembled with porous transport electrodes (PTEs) with a low catalyst loading were investigated for 500 h. A current density of 160 mA/cm2 and a high mass activity of 1368 A/gIr were achieved while operating at 60 °C with 1 mol/L sulfuric acid. The degradation of the cell was characterized using different electrochemical and physicochemical methods before, during and after operation of the and a mean for the cell of 67 μV/h was determined at 15 mA/cm2. To the best of our knowledge this is the first time that long-term performance of a PEM water electrolysis cell assembled with PTEs coated by is investigated.