Using the stoich vs I plots, we can deepen our kinetic analysis further: The experimental values of stoich of the NiNC-PANI cells remain larger due to their low FECO < 100%, i.e. because CO2 is largely consumed for (bi)carbonate (Figure ). At higher loadings, the NiNC-IMI cells displayed larger stoich, as well, however, this was due to their lower CCC=0 at FECO = 100%