“…They showed that the pore structure as well as the distribution of the electrolyte during operations is inhomogeneous: some pores were barely flooded by the electrolyte, whereas a local breakthrough of the electrolyte to the oxygen side was observed in other pores [9] . The locally high electrolyte saturation seems surprising, as previous studies have shown that even very small amounts of PTFE lead to a non-wettability of a pore system [10] . In conclusion, the influences of PTFE content and local inhomogeneities on ODC performance are not fully understood yet, no models to quantitatively describe this influence are available.…”