Fig. 3.

Internal LiI/I₂ solution concentration ($\tilde{c}$) as function of the external solution concentration ($c_{\mathrm{ext}}$) measured and determined based on two different models; Space charge (SC) (green curves) and Uniform potential (UP) (yellow curves) with different immobile charge densities ($\tilde{X}$) and pore radii ($r_p$). Experimentally determined internal solution concentrations are represented by solid symbols.