Figure 7.

Schematic illustration of counter-ion concentration (C) and dimensionless voltage ($\mathsf{\phi }$) distribution over a half-cell within an MCDI stack. Subscripts ms, m, me, Ma, and Mi stand for membrane/spacer interface, membrane phase, membrane/electrode interface, carbon macropores, and micropores, respectively. Reproduced with permission from [103], copyright Elsvier, 2017.