MULTIPLE STEADY STATES IN IONIC MEMBRANES WITH NEGATIVE CONDUCTANCE

摘要

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 component in the polarization resistance. The effects of diffusivity, concentration, supporting electrolyte, and fixed space charge on the conductance in the ionic membranes are also studied. An inverse concentration gradient may form as a result of the interaction between the ionic migration and the stoichiometric flux according to the reaction kinetics. [References: 9]