Membrane contamination modeling

In this chapter, where possible, we will use the definitions contained in Electrochemical Systems, 3 ed. (Newman and Thomas-Alyea [25]). We will discuss membrane contaminant models in one space dimension and time, which is sufficient to highlight all the major effects, but is readily extendable to two or three dimensions. In general, positive ionic current density, denoted by / in A/cm, will flow from left to right. We denote distance by 2 in absolute units (cm) and by x in scaled units. If L is the membrane thickness, X = z/L. 

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