Ion size effects on electric double layers and ionic transport through ion-exchange membrane systems

▸ The study is carried out at the nanometric scale with the PNP/DFT equations set. ▸ DFT is used to account for the ion size with symmetric and unsymmetric electrolytes. ▸ The analysis is carried out over a wide range of bulk density and of membrane charge. ▸ The electric double layer structure is highly influenced by the bulk density. ▸ The current/voltage curves are correlated to the relative membrane anion density.