Infinitesimal or negative polarization resistance can be induced by a
negative ionic conductance in membranes. When the reactant or product
have the ''wrong'' charge, they are respectively repelled or attracted
, under the influence of the coulombic force, resulting in a negative
conductance in the membrane, which in turn contributes to a negative c
omponent in the polarization resistance. The effects of diffusivity, c
oncentration, supporting electrolyte, and fixed space charge on the co
nductance in the ionic membranes are also studied. An inverse concentr
ation gradient may form as a result of the interaction between the ion
ic migration and the stoichiometric flux according to the reaction kin
etics.