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Network Simulation of the Electrical Response of Ion Exchange Membrane Systems

  • A. A. Moya
Chapter

Abstract

The steady-state, transient and small-signal ac responses of ion exchange membrane systems are studied by using the network simulation method. A network model for the Nernst-Planck and Poisson equations is used to describe the ionic transport processes through a cation-exchange membrane and the two diffusion boundary layers on both sides of the membrane. With this model and the electric circuit simulation programme PSpice, the steady-state, chronoamperometric, chronopotentiometric and small-signal ac responses are simulated. In this work, we analyse the influence of the fixed-charge concentration inside the membrane on (1) the steady-state current-voltage characteristic, (2) the ionic fluxes ratio describing the permselectivity of the membrane, (3) the chronoamperometric response, (4) the chronopotentiometric response and (5) the electrochemical impedance. Some of the results obtained for highly charged membranes can be compared with the analytical solutions in ideal membranes.

Keywords

Membrane System Diffusion Boundary Layer Applied Electric Potential Negative Fixed Charge Chronoamperometric Response 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

I am indebted to Professor J. Horno for many helpful suggestions.

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Departamento de FísicaUniversidad de JaénJaénSpain

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